redwing vs thrush

redwing and thrush both are nouns.

Word	Noun	Adjective	Verb	Adverb
redwing	Yes	No	No	No
thrush	Yes	No	No	No

As nouns, thrush is a hypernym of redwing; that is, thrush is a word with a broader meaning than redwing:

redwing: small European thrush having reddish flanks
thrush: songbirds characteristically having brownish upper plumage with a spotted breast

redwing (noun)	thrush (noun)
small European thrush having reddish flanks	songbirds characteristically having brownish upper plumage with a spotted breast
North American blackbird with scarlet patches on the wings	a woman who sings popular songs
	candidiasis of the oral cavity; seen mostly in infants or debilitated adults