エポックepokku

1. nounepoch

• Synonym時代じだいNeutralThe everyday word for an era or period, with the broadest range. 「エポック」 also means an era but often carries the nuance of a new epoch.
• Synonym年代ねんだいNeutralRefers to years or a decade, as in 「1980年代」. It focuses on periods counted by the year.
• Related世紀せいきNeutralA unit of one hundred years; also seen in 「世紀の大発見」. It stresses the time unit and does not carry the sense of an epoch-making turning point.

For an era in general, say 「時代」. For something epoch-making, use 「画期的」 or 「エポックメイキング」; 「エポック」 is rare on its own and mostly appears in such compounds.

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

1. 時代じだい。
2. 新しん時代じだい。