This is the 4314th most frequent Japanese word.
刑務所
Prison.
刑務所 is used to refer to a specific location where work is conducted.
友人は刑務所で働いている。
My friend works at the prison.
刑務所 indicates a place of confinement as a penalty.
その窃盗犯は三年刑務所に入ることになった。
The thief was sentenced to three years in prison.
刑務所 describes a place that requires adherence to rules.