Citrus decumana vs Citrus grandis

Citrus decumana and Citrus grandis both are nouns.

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

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

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

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

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