世代|せだいsedai[1]atamadaka (head-high)

1. noungeneration
   あの人ひとたちは同おなじ世代せだいです。↗

   Those men are of a generation.

• SynonymジェネレーションNeutralジェネレーション is a colloquial katakana loanword; it matches 世代 in meaning but belongs to casual speech, so prefer 世代 in formal or written contexts.

Use 世代 as the neutral, all-purpose word for generation; ジェネレーション is the colloquial loanword, best reserved for casual conversation rather than formal writing.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 同どう時代じだいに生うまれた、ある年齢層ねんれいそう。
2. 親おや・子こ・孫まごそれぞれの代だい。