carambola tree vs Averrhoa carambola

carambola tree and Averrhoa carambola both are nouns.

Word	Noun	Adjective	Verb	Adverb
carambola tree	Yes	No	No	No
Averrhoa carambola	Yes	No	No	No

As nouns, carambola tree and Averrhoa carambola are synonyms defined as:

carambola tree and Averrhoa carambola: East Indian tree bearing deeply ridged yellow-brown fruit

Other synonyms of carambola tree include carambola.

carambola tree (noun)	Averrhoa carambola (noun)
East Indian tree bearing deeply ridged yellow-brown fruit	East Indian tree bearing deeply ridged yellow-brown fruit