chemist vs Henry Cavendish

chemist and Henry Cavendish both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Henry Cavendish	Yes	No	No	No

chemist (noun)	Henry Cavendish (noun)
a scientist who specializes in chemistry	British chemist and physicist who established that water is a compound of hydrogen and oxygen and who calculated the density of the earth (1731-1810)
a health professional trained in the art of preparing and dispensing drugs