chemist vs Jaroslav Heyrovsky

chemist and Jaroslav Heyrovsky both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Jaroslav Heyrovsky	Yes	No	No	No

chemist (noun)	Jaroslav Heyrovsky (noun)
a scientist who specializes in chemistry	Czechoslovakian chemist who developed polarography (1890-1967)
a health professional trained in the art of preparing and dispensing drugs