chemist vs Ernest Solvay

chemist and Ernest Solvay both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Ernest Solvay	Yes	No	No	No

chemist (noun)	Ernest Solvay (noun)
a scientist who specializes in chemistry	Belgian chemist who developed the Solvay process and built factories exploiting it (1838-1922)
a health professional trained in the art of preparing and dispensing drugs