(ねんかん)

ねんかん
counter
years (duration)
1. years (duration)
A counter for counting the duration of time in years. Emphasizes the span or period of time.
I lived in Japan for three years.
Annual sales are one million yen.
Using 年間 as 'annual'
I have ten years of experience.

年間(ねんかん) emphasizes the span or duration of time in years, and can also function as a prefix meaning "annual" or "yearly."

TWO USES:
1. Duration counter: (さん)年間(ねんかん)()んだ (lived for three years) — emphasizes the full span
2. Prefix meaning "annual": 年間(ねんかん)()()げ (annual sales), 年間(ねんかん)計画(けいかく) (annual plan)

COMMON COUNTING:

  • (いち)年間(ねんかん): one year (duration)
  • (すう)年間(ねんかん): several years
  • (じゅう)年間(ねんかん): ten years

CONTRAST WITH (ねん):
(ねん) is the general counter for years ((さん)(ねん) = three years) and is also used for naming years (2024(ねん)). 年間(ねんかん) specifically stresses the continuous period or span.