chaja vs crested screamer

chaja and crested screamer both are nouns.

Word	Noun	Adjective	Verb	Adverb
chaja	Yes	No	No	No
crested screamer	Yes	No	No	No

As nouns, crested screamer is a hypernym of chaja; that is, crested screamer is a word with a broader meaning than chaja:

chaja: largest crested screamer; native to southern Brazil and Argentina
crested screamer: distinguished from the horned screamer by a feathery crest on the back of the head

chaja (noun)	crested screamer (noun)
largest crested screamer; native to southern Brazil and Argentina	distinguished from the horned screamer by a feathery crest on the back of the head