Pavo muticus vs peafowl

Pavo muticus and peafowl both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pavo muticus	Yes	No	No	No
peafowl	Yes	No	No	No

As nouns, peafowl is a hypernym of Pavo muticus; that is, peafowl is a word with a broader meaning than Pavo muticus:

Pavo muticus: peafowl of southeast Asia
peafowl: very large terrestrial southeast Asian pheasant often raised as an ornamental bird

Other hypernyms of Pavo muticus include bird of Juno.

Pavo muticus (noun)	peafowl (noun)
peafowl of southeast Asia	very large terrestrial southeast Asian pheasant often raised as an ornamental bird