phasianid vs pheasant

phasianid and pheasant both are nouns.

Word	Noun	Adjective	Verb	Adverb
phasianid	Yes	No	No	No
pheasant	Yes	No	No	No

As nouns, pheasant is a hyponym of phasianid; that is, pheasant is a word with a more specific, narrower meaning than phasianid:

phasianid: a kind of game bird in the family Phasianidae
pheasant: large long-tailed gallinaceous bird native to the Old World but introduced elsewhere

Other hyponyms of phasianid include quail, partridge.

phasianid (noun)	pheasant (noun)
a kind of game bird in the family Phasianidae	large long-tailed gallinaceous bird native to the Old World but introduced elsewhere
	flesh of a pheasant; usually braised