redtail vs thrush

redtail and thrush both are nouns.

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

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

redtail: European songbird with a reddish breast and tail; related to Old World robins
thrush: songbirds characteristically having brownish upper plumage with a spotted breast

redtail (noun)	thrush (noun)
dark brown American hawk species having a reddish-brown tail	songbirds characteristically having brownish upper plumage with a spotted breast
European songbird with a reddish breast and tail; related to Old World robins	a woman who sings popular songs
	candidiasis of the oral cavity; seen mostly in infants or debilitated adults