age-mate
Born same year
An age-mate is someone of approximately the same age, especially in contexts where age cohorts matter—schoolmates, members of an age-based social group, or peers in traditional societies that organize by generation: She reconnected with her age-mates at the reunion.
The term emphasizes shared generational experience rather than friendship.
peer
Same age or period
- cohortGroup sharing circumstances
- classmateFellow student
- schoolmateFellow pupil
- playmateRecreational companion
batchmate · contemporary · compeer · fellow · equal · counterpart · match · rival
coeval
Same age or period
- cohortGroup sharing circumstances
- classmateFellow student
- schoolmateFellow pupil
playmate · batchmate · contemporary · compeer · fellow · equal · counterpart · match · rival · competitor
playmate
Recreational companion
friend · companion · confidant · sidekick · ally · partner · crony · playfellow
initiation
Formal admission ceremony
- rites-of-passageCeremonies marking life transitions