予約 よやく reservation; appointment; booking; advance order n vs contract; subscription; pledge n vs programming (e.g. a device); setting (e.g. a timer) n vs Beginner ➥
約束 やくそく promise; agreement; arrangement; one's word; contract; pact; appointment; engagement; date n vs convention; rule n vs destiny; fate n vs Beginner ➥
約 やく approximately; about adv promise; appointment; engagement n shortening; reduction; simplification n contraction (in phonetics) n ling Beginner II ➥