Time
Years
noun
さいげつ
歳月 (さいげつ) Time, Years
歳入 (さいにゅう) Annual Revenue
歳暮 (せいぼ) End Of The Year, Year End Gift, End Of Year Gift
時 (とき) Time, Hour
時代 (じだい) Period, Epoch, Era, Time Period
時間 (じかん) Time
時期 (じき) Time, Season, Period
期間 (きかん) Period, Term, Interval
期限 (きげん) Deadline, Term, Due Date
時限 (じげん) Time Limit, Period
Time 歳月 is often measured in years old 歳 and months 月
Science さい gets げつ better over Time.
A cyborg さい gets げつ more time to live.
His cyborg さい only gets げつ free Time every couple of Years.