Citrus grandis vs pomelo tree

Citrus grandis and pomelo tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Citrus grandis	Yes	No	No	No
pomelo tree	Yes	No	No	No

As nouns, Citrus grandis and pomelo tree are synonyms defined as:

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

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

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