One took the other's place near the top
One name moved into the top fifty of a published list as the other dropped out of it, and the order held afterwards.
1200 pairs, drawn from the 2,573 names with a recorded popularity standing (common, familiar, uncommon). Every one comes from a single published list, where both names were measured on the same scale, in the same year, by the same registrar — so each is a fact about that ranking rather than a similarity judgement, and never a claim that one name displaced the other.
- Sean vs Noah
In Republic of Ireland · Boys, Noah moved into the top 50 at #3 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Sean vs Harry
In Republic of Ireland · Boys, Harry moved into the top 50 at #6 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Sean vs Luke
In Republic of Ireland · Boys, Luke moved into the top 50 at #7 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Sean vs Adam
In Republic of Ireland · Boys, Adam moved into the top 50 at #9 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Charlie vs Oisin
In Republic of Ireland · Boys, Charlie moved into the top 50 at #10 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- Sean vs Charlie
In Republic of Ireland · Boys, Charlie moved into the top 50 at #10 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Sean vs Liam
In Republic of Ireland · Boys, Liam moved into the top 50 at #11 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Jacob vs Ethan
In Northern Ireland · Boys, Jacob moved into the top 50 at #13 in 2024 as Ethan fell out of it to #57, having been #19 the year before.
- Fionn vs Oisin
In Republic of Ireland · Boys, Fionn moved into the top 50 at #14 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- Sean vs Fionn
In Republic of Ireland · Boys, Fionn moved into the top 50 at #14 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Kylie vs Hayley
In New Zealand · Girls, Hayley moved into the top 50 at #14 in 1990 as Kylie fell out of it to #94, having been #15 the year before.
- Adam vs Freddie
In Northern Ireland · Boys, Freddie moved into the top 50 at #15 in 2021 as Adam fell out of it to #59, having been #24 the year before.
- Ethan vs Finn
In Northern Ireland · Boys, Finn moved into the top 50 at #15 in 2024 as Ethan fell out of it to #57, having been #19 the year before.
- Oisin vs Alex
In Republic of Ireland · Boys, Alex moved into the top 50 at #16 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- Sean vs Alex
In Republic of Ireland · Boys, Alex moved into the top 50 at #16 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Luca vs Fionn
In Northern Ireland · Boys, Luca moved into the top 50 at #16 in 2022 as Fionn fell out of it to #51, having been #36 the year before.
- John vs Luca
In Northern Ireland · Boys, Luca moved into the top 50 at #16 in 2022 as John fell out of it to #79, having been #48 the year before.
- Liam vs Luca
In Northern Ireland · Boys, Luca moved into the top 50 at #16 in 2022 as Liam fell out of it to #62, having been #45 the year before.
- Lucas vs Luca
In Northern Ireland · Boys, Luca moved into the top 50 at #16 in 2022 as Lucas fell out of it to #57, having been #45 the year before.
- Luca vs Oscar
In Northern Ireland · Boys, Luca moved into the top 50 at #16 in 2022 as Oscar fell out of it to #51, having been #42 the year before.
- Patrick vs Luca
In Northern Ireland · Boys, Luca moved into the top 50 at #16 in 2022 as Patrick fell out of it to #53, having been #30 the year before.
- Rory vs Tommy
In Northern Ireland · Boys, Tommy moved into the top 50 at #16 in 2020 as Rory fell out of it to #65, having been #32 the year before.
- Adam vs Daithi
In Northern Ireland · Boys, Daithi moved into the top 50 at #17 in 2023 as Adam fell out of it to #60, having been #31 the year before.
- Adam vs Jude
In Northern Ireland · Boys, Jude moved into the top 50 at #17 in 2021 as Adam fell out of it to #59, having been #24 the year before.
- Alfie vs Jordan
In England and Wales · Boys, Alfie moved into the top 50 at #17 in 2003 as Jordan fell out of it to #54, having been #43 the year before.
- Amanda vs Carol
In Republic of Ireland · Girls, Amanda moved into the top 50 at #17 in 1985 as Carol fell out of it to #59, having been #43 the year before.
- Amanda vs Denise
In Republic of Ireland · Girls, Amanda moved into the top 50 at #17 in 1985 as Denise fell out of it to #52, having been #40 the year before.
- Amanda vs Yvonne
In Republic of Ireland · Girls, Amanda moved into the top 50 at #17 in 1985 as Yvonne fell out of it to #60, having been #46 the year before.
- Cillian vs Oisin
In Republic of Ireland · Boys, Cillian moved into the top 50 at #17 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- Sean vs Cillian
In Republic of Ireland · Boys, Cillian moved into the top 50 at #17 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- Matthew vs Daithi
In Northern Ireland · Boys, Daithi moved into the top 50 at #17 in 2023 as Matthew fell out of it to #57, having been #31 the year before.
- Freddie vs Darragh
In Northern Ireland · Boys, Freddie moved into the top 50 at #17 in 2024 as Darragh fell out of it to #51, having been #36 the year before.
- Ethan vs Freddie
In Northern Ireland · Boys, Freddie moved into the top 50 at #17 in 2024 as Ethan fell out of it to #57, having been #19 the year before.
- Freddie vs Shea
In Northern Ireland · Boys, Freddie moved into the top 50 at #17 in 2024 as Shea fell out of it to #51, having been #32 the year before.
- Louise vs Gemma
In New Zealand · Girls, Gemma moved into the top 50 at #17 in 1984 as Louise fell out of it to #52, having been #34 the year before.
- Theo vs Ben
In Northern Ireland · Boys, Theo moved into the top 50 at #18 in 2018 as Ben fell out of it to #64, having been #38 the year before.
- Ellie vs Jade
In Northern Ireland · Girls, Ellie moved into the top 50 at #18 in 2002 as Jade fell out of it to #64, having been #28 the year before.
- Finn vs Oisin
In Republic of Ireland · Boys, Finn moved into the top 50 at #18 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- Sean vs Finn
In Republic of Ireland · Boys, Finn moved into the top 50 at #18 in 2018 as Sean fell out of it to #74, having been #5 the year before.
- John vs Theo
In Northern Ireland · Boys, Theo moved into the top 50 at #18 in 2018 as John fell out of it to #60, having been #32 the year before.
- Kylie vs Kate
In New Zealand · Girls, Kate moved into the top 50 at #18 in 1990 as Kylie fell out of it to #94, having been #15 the year before.
- Riley vs Rhys
In Northern Ireland · Boys, Riley moved into the top 50 at #18 in 2011 as Rhys fell out of it to #66, having been #39 the year before.
- Rory vs Theo
In Northern Ireland · Boys, Theo moved into the top 50 at #18 in 2018 as Rory fell out of it to #52, having been #37 the year before.
- Jennifer vs Chloe
In New Zealand · Girls, Chloe moved into the top 50 at #19 in 1991 as Jennifer fell out of it to #62, having been #41 the year before.
- Michael vs Daithi
In Northern Ireland · Boys, Daithi moved into the top 50 at #19 in 2021 as Michael fell out of it to #55, having been #37 the year before.
- Eirik vs Filip
In Norway · Boys, Filip moved into the top 50 at #19 in 2013 as Eirik fell out of it to #55, having been #47 the year before.
- Fredrik vs Filip
In Norway · Boys, Filip moved into the top 50 at #19 in 2013 as Fredrik fell out of it to #56, having been #36 the year before.
- Tania vs Kathleen
In New Zealand · Girls, Tania moved into the top 50 at #19 in 1963 as Kathleen fell out of it to #52, having been #49 the year before.
- Leanne vs Katrina
In New Zealand · Girls, Katrina moved into the top 50 at #19 in 1974 as Leanne fell out of it to #52, having been #35 the year before.
- Lauren vs Kylie
In New Zealand · Girls, Lauren moved into the top 50 at #19 in 1990 as Kylie fell out of it to #94, having been #15 the year before.
- Adam vs Ronan
In Northern Ireland · Boys, Ronan moved into the top 50 at #20 in 2021 as Adam fell out of it to #59, having been #24 the year before.
- Mason vs Alex
In Northern Ireland · Boys, Mason moved into the top 50 at #20 in 2012 as Alex fell out of it to #57, having been #35 the year before.
- Ethan vs Archie
In Northern Ireland · Boys, Archie moved into the top 50 at #20 in 2024 as Ethan fell out of it to #57, having been #19 the year before.
- Donna vs Gail
In New South Wales, Australia · Girls, Donna moved into the top 50 at #20 in 1959 as Gail fell out of it to #53, having been #40 the year before.
- Mason vs Eoin
In Northern Ireland · Boys, Mason moved into the top 50 at #20 in 2012 as Eoin fell out of it to #54, having been #33 the year before.
- Florence vs Sienna
In New Zealand · Girls, Florence moved into the top 50 at #20 in 2023 as Sienna fell out of it to #53, having been #28 the year before.
- Grethe vs Lena
In Norway · Girls, Lena moved into the top 50 at #20 in 1969 as Grethe fell out of it to #57, having been #44 the year before.
- Silje vs Gunn
In Norway · Girls, Silje moved into the top 50 at #20 in 1975 as Gunn fell out of it to #62, having been #45 the year before.
- Hilde vs Sandra
In Norway · Girls, Sandra moved into the top 50 at #20 in 1990 as Hilde fell out of it to #60, having been #32 the year before.
- Jennifer vs Kayla
In New Zealand · Girls, Kayla moved into the top 50 at #20 in 1991 as Jennifer fell out of it to #62, having been #41 the year before.