yard bird vs inmate

yard bird and inmate both are nouns.

Word	Noun	Adjective	Verb	Adverb
yard bird	Yes	No	No	No
inmate	Yes	No	No	No

As nouns, yard bird and inmate are synonyms defined as:

Other synonyms of yard bird include con, convict, yardbird.

yard bird (noun)	inmate (noun)
a military recruit who is assigned menial tasks	one of several resident of a dwelling (especially someone confined to a prison or hospital)
a person serving a sentence in a jail or prison	a patient who is residing in the hospital where he is being treated
	a person serving a sentence in a jail or prison