pea-chick vs bird of Juno

pea-chick and bird of Juno both are nouns.

Word	Noun	Adjective	Verb	Adverb
pea-chick	Yes	No	No	No
bird of Juno	Yes	No	No	No

As nouns, bird of Juno is a hypernym of pea-chick; that is, bird of Juno is a word with a broader meaning than pea-chick:

pea-chick: a young peafowl
bird of Juno: very large terrestrial southeast Asian pheasant often raised as an ornamental bird

Other hypernyms of pea-chick include peafowl.

pea-chick (noun)	bird of Juno (noun)
a young peafowl	very large terrestrial southeast Asian pheasant often raised as an ornamental bird