緊縮 （キンシュク） shrinkage, contraction, economy, retrenchment

緊急 （キンキュウ） urgency, emergency

喫緊 （キッキン） urgent, pressing, exigent

緊める （しめる） to be strict with

閉まる （しまる） to be shut, to close, to be closed, to be firm (of a body, face, etc.), to be well-knit, to be locked, to tighten, to be tightened, to become sober, to become tense