ant bird vs tyrannid

ant bird and tyrannid both are nouns.

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

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

ant bird: any of various dull-colored South American birds that feeding on ants some following army ant swarms
tyrannid: a passerine bird of the suborder Tyranni

ant bird (noun)	tyrannid (noun)
any of various dull-colored South American birds that feeding on ants some following army ant swarms	a passerine bird of the suborder Tyranni