Citrus grandis vs Citrus decumana

Citrus grandis and Citrus decumana both are nouns.

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

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

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

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

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