penal facility vs brig

penal facility and brig both are nouns.

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

As nouns, brig is a hyponym of penal facility; that is, brig is a word with a more specific, narrower meaning than penal facility:

penal facility: an institution where persons are confined as punishment and to protect the public
brig: a penal institution (especially on board a ship)

Other hyponyms of penal facility include camp, correctional institution, penal colony.

penal facility (noun)	brig (noun)
an institution where persons are confined as punishment and to protect the public	a penal institution (especially on board a ship)
	two-masted sailing vessel square-rigged on both masts