年間|ねんかんnenkan[0]heiban (flat)

1. noun, adverb(period of) a year
   私はここで１０年間ねんかん働はたらいている。↗

   I've worked here for ten years.
2. noun (suffix)during the era (of)

• Synonym一年いちねんNeutralThe length of one year, or a single calendar year, as in 「一年かかる」; 「年間」 also appears as 「一年間」 and often modifies nouns like 「年間計画」.
• Synonym年中ねんじゅうNeutralCovers the whole year, or works adverbially for 'all year round', as in 「年中忙しい」; it carries a sense of constancy.
• Related年としNeutralPoints to the year itself or to age, as in 「年が明ける」「年を取る」; 「年間」 covers a span of one year or an era and follows numerals like 「3年間」.
• Related年度ねんどNeutralA one-year period set for accounting, school years etc., as in 「2024年度」; its start and end are fixed by convention and may differ from the calendar year.
• Related年次ねんじWrittenA written/formal term for yearly or by year, as in 「年次報告」「入社年次」; the emphasis is on ordering things by year.

Use 「年間」 for a span of one year, several years, or an era, as in 「年間売上」「3年間」. For an institutional year say 「年度」, and for 'all year round' say 「年中」.

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

1. 1年間ねんかん。1年ねんの間あいだ。1年ねん中ちゅう。
2. ある年代ねんだいの間あいだを意味いみする表現ひょうげん。
3. 年ねん単位たんいの期間きかんを表あらわす助数詞じょすうし。