tyrant bird vs tyrannid

tyrant bird and tyrannid both are nouns.

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

As nouns, tyrannid is a hypernym of tyrant bird; that is, tyrannid is a word with a broader meaning than tyrant bird:

tyrant bird: large American birds that characteristically catch insects on the wing
tyrannid: a passerine bird of the suborder Tyranni

tyrant bird (noun)	tyrannid (noun)
large American birds that characteristically catch insects on the wing	a passerine bird of the suborder Tyranni