quince bush vs quince

quince bush and quince both are nouns.

Word	Noun	Adjective	Verb	Adverb
quince bush	Yes	No	No	No
quince	Yes	No	No	No

As nouns, quince bush and quince are synonyms defined as:

quince bush and quince: small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated

Other synonyms of quince bush include Cydonia oblonga.

quince bush (noun)	quince (noun)
small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated	aromatic acid-tasting pear-shaped fruit used in preserves
	small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated