yardbird vs inmate

yardbird and inmate both are nouns.

Word	Noun	Adjective	Verb	Adverb
yardbird	Yes	No	No	No
inmate	Yes	No	No	No

As nouns, yardbird and inmate are synonyms defined as:

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

yardbird (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