数年間

すうねんかん

several years

数年来

すうねんらい

several years standing, over several years

数年後

すうねんご

a few years later

数年前

すうねんまえ

a few years ago, some years back

年数

ねんすう

number of years

数え年

かぞえどし

old manner of reckoning one's age, newborns being considered a year old, with everyone adding one year to their age at New Year's

数億年

すうおくねん

several hundred million years

数十年

すうじゅうねん

few decades, many decades, several decades

築年数

ちくねんすう

age of a building

耐用年数

たいようねんすう

(machine's) service life

残存年数

ざんぞんねんすー

current maturity

法定耐用年数

ほうていたいようねんすう

statutory useful life

年金現価係数

ねんきんげんかけいすう

uniform series present worth factor

年金終価係数

ねんきんおわりあたいけいすう

uniform series final worth factor

年が年

としがとし

considering this age

年

とし ねん とせ

(とし) year

年が年中

ねんがねんじゅう としがねんじゅう

all year round, year after year

年年歳歳

ねんねんさいさい

annually, every year, year in year out, from year to year

年末年始

ねんまつねんし

New Year's holiday, period encompassing the close of the old year and the start of the New Year