slammer vs hoosgow

slammer and hoosgow both are nouns.

Word	Noun	Adjective	Verb	Adverb
slammer	Yes	No	No	No
hoosgow	Yes	No	No	No

As nouns, hoosgow is a hyponym of slammer; that is, hoosgow is a word with a more specific, narrower meaning than slammer:

slammer: a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence)
hoosgow: slang for a jail

Other hyponyms of slammer include bastille, holding cell, hoosegow, house of correction, lockup, workhouse.

slammer (noun)	hoosgow (noun)
a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence)	slang for a jail
a person who closes things violently