pummelo vs Citrus decumana

pummelo and Citrus decumana both are nouns.

Word	Noun	Adjective	Verb	Adverb
pummelo	Yes	No	No	No
Citrus decumana	Yes	No	No	No

As nouns, pummelo and Citrus decumana are synonyms defined as:

pummelo and Citrus decumana: southeastern Asian tree producing large fruits resembling grapefruits

Other synonyms of pummelo include Citrus grandis, Citrus maxima, pomelo, pomelo tree, shaddock.

pummelo (noun)	Citrus decumana (noun)
southeastern Asian tree producing large fruits resembling grapefruits	southeastern Asian tree producing large fruits resembling grapefruits