wood thrush vs thrush

wood thrush and thrush both are nouns.

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

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

wood thrush: large thrush common in eastern American woodlands; noted for its melodious song
thrush: songbirds characteristically having brownish upper plumage with a spotted breast

wood thrush (noun)	thrush (noun)
large thrush common in eastern American woodlands; noted for its melodious song	songbirds characteristically having brownish upper plumage with a spotted breast
	a woman who sings popular songs
	candidiasis of the oral cavity; seen mostly in infants or debilitated adults