pewit vs plover

pewit and plover both are nouns.

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

As nouns, plover is a hypernym of pewit; that is, plover is a word with a broader meaning than pewit:

pewit: large crested Old World plover having wattles and spurs
plover: any of numerous chiefly shorebirds of relatively compact build having straight bills and large pointed wings; closely related to the sandpipers

pewit (noun)	plover (noun)
large crested Old World plover having wattles and spurs	any of numerous chiefly shorebirds of relatively compact build having straight bills and large pointed wings; closely related to the sandpipers
small olive-colored woodland flycatchers of eastern North America
small black-headed European gull