noun
confined space; enclosed area
Refers to a physically restricted or enclosed place. Often used in contexts like 閉所恐怖症 (claustrophobia) or describing a small, shut-in area.
閉所恐怖症の人は、エレベーターのような閉所を避けることがある。
People with claustrophobia sometimes avoid confined spaces like elevators.
noun, noun or participle which takes 'suru'
closing down; shutting (a facility)
Used for the closure of an institution, office, clinic, or similar facility. Can be used as a noun or with する to mean 'to close down'.
その診療所は来月閉所する予定だ。
The clinic is scheduled to close next month.