Pavo cristatus vs bird of Juno

Pavo cristatus and bird of Juno both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pavo cristatus	Yes	No	No	No
bird of Juno	Yes	No	No	No

As nouns, bird of Juno is a hypernym of Pavo cristatus; that is, bird of Juno is a word with a broader meaning than Pavo cristatus:

Pavo cristatus: peafowl of India and Ceylon
bird of Juno: very large terrestrial southeast Asian pheasant often raised as an ornamental bird

Other hypernyms of Pavo cristatus include peafowl.

Pavo cristatus (noun)	bird of Juno (noun)
peafowl of India and Ceylon	very large terrestrial southeast Asian pheasant often raised as an ornamental bird