こうか
硬化
N5Common wordNoun
Noun, Suru verb, Intransitive verb
hardening•vulcanization•vulcanisation•sclerosis•curing
Noun, Suru verb, Intransitive verb
hardening (of attitude, stance, etc.)•stiffening•toughening
Noun, Suru verb, Intransitive verb
upturn (in the market)•firming up