blackcap vs pewit

blackcap and pewit both are nouns.

Word	Noun	Adjective	Verb	Adverb
blackcap	Yes	No	No	No
pewit	Yes	No	No	No

As nouns, blackcap and pewit are synonyms defined as:

Other synonyms of blackcap include Larus ridibundus, laughing gull, pewit gull.

blackcap (noun)	pewit (noun)
small brownish-grey warbler with a black crown	large crested Old World plover having wattles and spurs
chickadee having a dark crown	small olive-colored woodland flycatchers of eastern North America
small black-headed European gull	small black-headed European gull
raspberry native to eastern North America having black thimble-shaped fruit