coca plant vs coca

coca plant and coca both are nouns.

Word	Noun	Adjective	Verb	Adverb
coca plant	Yes	No	No	No
coca	Yes	No	No	No

As nouns, coca plant and coca are synonyms defined as:

coca plant and coca: a South American shrub whose leaves are chewed by natives of the Andes; a source of cocaine

Other synonyms of coca plant include Erythroxylon coca.

coca plant (noun)	coca (noun)
a South American shrub whose leaves are chewed by natives of the Andes; a source of cocaine	dried leaves of the coca plant (and related plants that also contain cocaine); chewed by Andean people for their stimulating effect
	a South American shrub whose leaves are chewed by natives of the Andes; a source of cocaine