hoosegow vs slammer

hoosegow and slammer both are nouns.

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

As nouns, slammer is a hypernym of hoosegow; that is, slammer is a word with a broader meaning than hoosegow:

hoosegow: slang for a jail
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)

Other hypernyms of hoosegow include clink, gaol, jail, jailhouse, pokey, poky.

hoosegow (noun)	slammer (noun)
slang for a jail	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)
	a person who closes things violently