wetnurse vs wet nurse

wetnurse and wet nurse both are nouns.

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

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

Other synonyms of wetnurse include amah, wet-nurse.

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