chatterer vs tyrant flycatcher

chatterer and tyrant flycatcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
chatterer	Yes	No	No	No
tyrant flycatcher	Yes	No	No	No

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

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

Other hypernyms of chatterer include flycatcher, New World flycatcher, tyrant bird.

chatterer (noun)	tyrant flycatcher (noun)
passerine bird of New World tropics	large American birds that characteristically catch insects on the wing
an obnoxious and foolish and loquacious talker