Kaja vs Silje
Kaja and Siljecompared 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.
Norway · Girls
In 2025, Kaja was ranked #57 and Silje #286 among girls in Norway.
Kaja and Silje over time
Kaja and Silje appear together in 1 published list, across 60 years of shared records. Silje held the stronger position in more years in 1 of them, Kaja in 0.
In none of those lists did their order change and stay changed.
Silje reached its own highest recorded position earlier in 1 of those lists, and Kaja in none. 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
Kaja and Silje changed places 6 times in Norway · Girls between 1966 and 2025, ending at #57 and #286.
- Longest-running competitions
Kaja and Silje were both ranked in Norway · Girls for 60 years, from 1966 to 2025, ending at #57 and #286.
List by list
Norway · Girls60 shared years, 1966–2025
Kaja held the stronger position in 19 of those years, Silje in 41.
Highest recorded here: Kaja #41 in 2006, Silje #1 in 1982.
The order between them never changed and held in this list.
Most recent shared year, 2025: Kaja #57, Silje #286.
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 | Kaja | Silje |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | female | female |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, IE, NO | NO |
| Most recent popularity observation | Norway · Girls #57 (2025) | Norway · Girls #286 (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 | 40/100 |
| Data Confidence | medium | medium |
What the data shows
- Kaja and Silje both have 2 syllables.
- Both names have recorded usage in NO.
How each name got here
Kaja
Popularity journey
First recorded1946
First recorded at #375 among girls in Norway in 1946 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1946–2025
Highest recorded position: #41 among girls in Norway, in 2006 (recorded 1946–2025).
Norway · Girls
Most recent2025
Most recently recorded at #1809 among girls in England and Wales, in 2025.
England and Wales · Girls
Silje
Popularity journey
First recorded1966
First recorded at #542 among girls in Norway in 1966 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1966–2025
Highest recorded position: #1 among girls in Norway, in 1982 (recorded 1966–2025).
Norway · Girls
Most recent2025
Most recently recorded at #286 among girls in Norway, in 2025.
Norway · Girls