peafowl vs blue peafowl

peafowl and blue peafowl both are nouns.

Word	Noun	Adjective	Verb	Adverb
peafowl	Yes	No	No	No
blue peafowl	Yes	No	No	No

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

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

Other hyponyms of peafowl include pea-chick, peachick, peacock, peahen, Pavo cristatus, green peafowl, Pavo muticus.

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