nursemaid vs wet nurse

nursemaid and wet nurse both are nouns.

Word	Noun	Adjective	Verb	Adverb
nursemaid	Yes	No	No	No
wet nurse	Yes	No	No	No

As nouns, wet nurse is a hyponym of nursemaid; that is, wet nurse is a word with a more specific, narrower meaning than nursemaid:

Other hyponyms of nursemaid include dry nurse, mammy, amah, wet-nurse, wetnurse.

nursemaid (noun)	wet nurse (noun)
a woman who is the custodian of children	a woman hired to suckle a child of someone else