tyrant bird vs cotinga

tyrant bird and cotinga both are nouns.

Word	Noun	Adjective	Verb	Adverb
tyrant bird	Yes	No	No	No
cotinga	Yes	No	No	No

As nouns, cotinga is a hyponym of tyrant bird; that is, cotinga is a word with a more specific, narrower meaning than tyrant bird:

tyrant bird: large American birds that characteristically catch insects on the wing
cotinga: passerine bird of New World tropics

tyrant bird (noun)	cotinga (noun)
large American birds that characteristically catch insects on the wing	passerine bird of New World tropics