pomelo tree vs pummelo

pomelo tree and pummelo both are nouns.

Word	Noun	Adjective	Verb	Adverb
pomelo tree	Yes	No	No	No
pummelo	Yes	No	No	No

As nouns, pomelo tree and pummelo are synonyms defined as:

pomelo tree and pummelo: southeastern Asian tree producing large fruits resembling grapefruits

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

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