wet nurse vs wetnurse

wet nurse and wetnurse both are nouns.

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

As nouns, wet nurse and wetnurse are synonyms defined as:

Other synonyms of wet nurse include amah, wet-nurse.

wet nurse (noun)	wetnurse (noun)
a woman hired to suckle a child of someone else	a woman hired to suckle a child of someone else