time / hour / the hours or time when something happens

complex (not simple or straightforward)

needed, necessary

need, necessity

solution, settlement / (music) Progression from dissonance to consonance; a chord to which such progression is made; resolution

(transitive) solve, resolve, settle (a problem, a trouble, a criminal case) / (intransitive) be solved, be settled / (intransitive) can be solved; be soluble

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

timetable

an hour-long period

(dialect, Ibaraki) time / (dialect, Ibaraki) hour / (dialect, Ibaraki) the hours or time when something happens