nanny vs dry nurse

nanny and dry nurse both are nouns.

Word	Noun	Adjective	Verb	Adverb
nanny	Yes	No	No	No
dry nurse	Yes	No	No	No

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

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

nanny (noun)	dry nurse (noun)
female goat	a nurse who cares for but does not suckle an infant
a woman who is the custodian of children