wood pewee vs tyrant flycatcher

wood pewee and tyrant flycatcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
wood pewee	Yes	No	No	No
tyrant flycatcher	Yes	No	No	No

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

wood pewee: small olive-colored woodland flycatchers of eastern North America
tyrant flycatcher: large American birds that characteristically catch insects on the wing

Other hypernyms of wood pewee include flycatcher, New World flycatcher, tyrant bird.

wood pewee (noun)	tyrant flycatcher (noun)
small olive-colored woodland flycatchers of eastern North America	large American birds that characteristically catch insects on the wing