penal institution vs penal facility

penal institution and penal facility both are nouns.

Word	Noun	Adjective	Verb	Adverb
penal institution	Yes	No	No	No
penal facility	Yes	No	No	No

As nouns, penal institution and penal facility are synonyms defined as:

penal institution and penal facility: an institution where persons are confined as punishment and to protect the public

penal institution (noun)	penal facility (noun)
an institution where persons are confined as punishment and to protect the public	an institution where persons are confined as punishment and to protect the public