chemist vs Jons Jakob Berzelius

chemist and Jons Jakob Berzelius both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Jons Jakob Berzelius	Yes	No	No	No

chemist (noun)	Jons Jakob Berzelius (noun)
a scientist who specializes in chemistry	Swedish chemist who discovered three new elements and determined the atomic weights of many others (1779-1848)
a health professional trained in the art of preparing and dispensing drugs