Nephelium litchi vs lichee

Nephelium litchi and lichee both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nephelium litchi	Yes	No	No	No
lichee	Yes	No	No	No

As nouns, Nephelium litchi and lichee are synonyms defined as:

Nephelium litchi and lichee: Chinese tree cultivated especially in Philippines and India for its edible fruit; sometimes placed in genus Nephelium

Other synonyms of Nephelium litchi include litchi, Litchi chinensis, litchi tree.

Nephelium litchi (noun)	lichee (noun)
Chinese tree cultivated especially in Philippines and India for its edible fruit; sometimes placed in genus Nephelium	Chinese fruit having a thin brittle shell enclosing a sweet jellylike pulp and a single seed; often dried
	Chinese tree cultivated especially in Philippines and India for its edible fruit; sometimes placed in genus Nephelium