cinchona bark vs cinchona

cinchona bark and cinchona both are nouns.

Word	Noun	Adjective	Verb	Adverb
cinchona bark	Yes	No	No	No
cinchona	Yes	No	No	No

As nouns, cinchona bark and cinchona are synonyms defined as:

cinchona bark and cinchona: medicinal bark of cinchona trees; source of quinine and quinidine

Other synonyms of cinchona bark include Jesuit's bark, Peruvian bark.

cinchona bark (noun)	cinchona (noun)
medicinal bark of cinchona trees; source of quinine and quinidine	any of several trees of the genus Cinchona
	medicinal bark of cinchona trees; source of quinine and quinidine