gaol vs workhouse

gaol and workhouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
gaol	Yes	No	Yes	No
workhouse	Yes	No	No	No

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

gaol: 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)
workhouse: a county jail that holds prisoners for periods up to 18 months

Other hyponyms of gaol include bastille, holding cell, hoosegow, hoosgow, house of correction, lockup.

gaol (noun)	workhouse (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)	a county jail that holds prisoners for periods up to 18 months
	a poorhouse where able-bodied poor are compelled to labor

gaol (verb)	workhouse (verb)
lock up or confine, in or as in a jail