Cain vs Kajus
Cain and Kajuscompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
Northern Ireland · Boys
In 2020, Cain was ranked #270 and Kajus #334 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2025, Cain was ranked #676 and Kajus #829 among boys in Republic of Ireland.
England and Wales · Boys
In 2024, Cain was ranked #1460 and Kajus #2088 among boys in England and Wales.
Cain and Kajus over time
Cain and Kajus appear together in 3 published lists, across 49 years of shared records. Cain held the stronger position in more years in 2 of them, Kajus in 1.
In none of those lists did their order change and stay changed.
Cain reached its own highest recorded position earlier in 2 of those lists, Kajus in 1. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- Repeatedly exchanged positions
Cain and Kajus changed places 4 times in England and Wales · Boys between 2004 and 2024, ending at #1460 and #2088.
- Peaked in the same years
Both reached their highest recorded position in Northern Ireland · Boys within 2 years — Cain #200 in 2013, Kajus #204 in 2012.
List by list
England and Wales · Boys21 shared years, 2004–2024
Cain held the stronger position in 16 of those years, Kajus in 5.
Highest recorded here: Cain #275 in 2004, Kajus #611 in 2013.
The order between them never changed and held in this list.
Most recent shared year, 2024: Cain #1460, Kajus #2088.
Republic of Ireland · Boys16 shared years, 2006–2025
Cain held the stronger position in 2 of those years, Kajus in 13.
Highest recorded here: Cain #354 in 2006, Kajus #211 in 2010.
The order between them never changed and held in this list.
Most recent shared year, 2025: Cain #676, Kajus #829.
Northern Ireland · Boys12 shared years, 2007–2020
Cain held the stronger position in 7 of those years, Kajus in 2.
Highest recorded here: Cain #200 in 2013, Kajus #204 in 2012.
The order between them never changed and held in this list.
Most recent shared year, 2020: Cain #270, Kajus #334.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Cain | Kajus |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 1 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | GB-ENW, GB-NIR, IE |
| Most recent popularity observation | Republic of Ireland · Boys #676 (2025) | Republic of Ireland · Boys #829 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 95/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Cain has 1 syllable, compared with 2 for Kajus.
- Both names have recorded usage in GB-ENW, GB-NIR, IE.
How each name got here
Cain
Popularity journey
First recorded1991
First recorded at #288 among boys in Republic of Ireland in 1991 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1998–2024
Highest recorded position: #149 among boys in Northern Ireland, in 2003 (recorded 1998–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #676 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys
Kajus
Popularity journey
First recorded2004
First recorded at #2304 among boys in England and Wales in 2004 — the earliest year that source publishes this name, not necessarily the earliest it was used.
England and Wales · Boys
Highest recorded2007–2020
Highest recorded position: #204 among boys in Northern Ireland, in 2012 (recorded 2007–2020).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #829 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys