to go in; to come in / 要る: to be necessary, to be required

to enter, go into, get into a place or a thing / to join a group or organization / to be contained (in), to be included (in) / to be a member of a group, set, category

period / time / date / term

(television show) season / period (of time) / geological age

set off; depart; start from; emit; discharge; disclose; occur

(mahjong) green dragon (tile) / (mahjong) a 役 (yaku, “winning hand”) with a triplet or quad of green dragon tiles

a dog

epoch

everything

(colloquial) current boyfriend