nursemaid vs mammy

nursemaid and mammy both are nouns.

Word	Noun	Adjective	Verb	Adverb
nursemaid	Yes	No	No	No
mammy	Yes	No	No	No

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

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

nursemaid (noun)	mammy (noun)
a woman who is the custodian of children	informal terms for a mother
	an offensive term for a Black nursemaid in the southern U.S.