fieldfare vs thrush

fieldfare and thrush both are nouns.

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

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

fieldfare: medium-sized Eurasian thrush seen chiefly in winter
thrush: songbirds characteristically having brownish upper plumage with a spotted breast

fieldfare (noun)	thrush (noun)
medium-sized Eurasian thrush seen chiefly in winter	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