year, counter for years (e.g. of an era), grades (e.g. school), period of an apprentice's contract (usu. ten years)
年【とせ】
counter for years (following a number in the hito-futa-mi counting system)
今年【ことし】
this year
年代【ねんだい】
age, era, period, date
去年【きょねん】
last year
年生【ねんせい】
nth-year student, nth-year pupil
半年【はんとし】
half a year, six months
毎年【まいとし】
every year, yearly, annually
年齢【ねんれい】
age, years
長年【ながねん】
long time, many years
年寄り【としより】
old person, elderly person, senior citizen, trustee of the Japan Sumo Association, retired high-ranking wrestler who is licensed to coach and receives retirement pay, senior statesman (of the Tokugawa shogunate), important local official (under the Tokugawa Shogunate)