pewit vs Contopus virens

pewit and Contopus virens both are nouns.

Word	Noun	Adjective	Verb	Adverb
pewit	Yes	No	No	No
Contopus virens	Yes	No	No	No

As nouns, pewit and Contopus virens are synonyms defined as:

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

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

pewit (noun)	Contopus virens (noun)
large crested Old World plover having wattles and spurs	small olive-colored woodland flycatchers of eastern North America
small olive-colored woodland flycatchers of eastern North America
small black-headed European gull