wood pewee vs Contopus virens

wood pewee and Contopus virens both are nouns.

Word	Noun	Adjective	Verb	Adverb
wood pewee	Yes	No	No	No
Contopus virens	Yes	No	No	No

As nouns, wood pewee and Contopus virens are synonyms defined as:

wood pewee and Contopus virens: small olive-colored woodland flycatchers of eastern North America

Other synonyms of wood pewee include peewee, peewit, pewee, pewit.

wood pewee (noun)	Contopus virens (noun)
small olive-colored woodland flycatchers of eastern North America	small olive-colored woodland flycatchers of eastern North America