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

rationalization / streamlining

rationalize / streamline

合略仮名: now obsolete kana ligature such as ヿ for コト and ゟ for より.

瓜: gourd, squash, melon / 売り: appeal, appealingness; (finance) buy order

売り値: selling price