wet-nurse vs nanny

wet-nurse and nanny both are nouns.

Word	Noun	Adjective	Verb	Adverb
wet-nurse	Yes	No	Yes	No
nanny	Yes	No	No	No

As nouns, nanny is a hypernym of wet-nurse; that is, nanny is a word with a broader meaning than wet-nurse:

Other hypernyms of wet-nurse include nurse, nursemaid.

wet-nurse (noun)	nanny (noun)
a woman hired to suckle a child of someone else	female goat
	a woman who is the custodian of children

wet-nurse (verb)	nanny (verb)
give suck to