cinchona bark vs Peruvian bark

cinchona bark and Peruvian bark both are nouns.

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

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

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

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

cinchona bark (noun)	Peruvian bark (noun)
medicinal bark of cinchona trees; source of quinine and quinidine	medicinal bark of cinchona trees; source of quinine and quinidine