argus pheasant vs pheasant

argus pheasant and pheasant both are nouns.

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

As nouns, pheasant is a hypernym of argus pheasant; that is, pheasant is a word with a broader meaning than argus pheasant:

argus pheasant: large brilliantly patterned East Indian pheasant
pheasant: large long-tailed gallinaceous bird native to the Old World but introduced elsewhere

argus pheasant (noun)	pheasant (noun)
large brilliantly patterned East Indian pheasant	large long-tailed gallinaceous bird native to the Old World but introduced elsewhere
	flesh of a pheasant; usually braised