chemist vs Giulio Natta

chemist and Giulio Natta both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Giulio Natta	Yes	No	No	No

chemist (noun)	Giulio Natta (noun)
a scientist who specializes in chemistry	Italian chemist noted for work on polymers (1903-1979)
a health professional trained in the art of preparing and dispensing drugs