Cydonia oblonga vs quince bush

Cydonia oblonga and quince bush both are nouns.

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

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

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

Other synonyms of Cydonia oblonga include quince.

Cydonia oblonga (noun)	quince bush (noun)
small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated	small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated