Citrus grandis vs shaddock

Citrus grandis and shaddock both are nouns.

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

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

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

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

Citrus grandis (noun)	shaddock (noun)
southeastern Asian tree producing large fruits resembling grapefruits	large pear-shaped fruit similar to grapefruit but with coarse dry pulp
	southeastern Asian tree producing large fruits resembling grapefruits