chemist vs Antoine Lavoisier

chemist and Antoine Lavoisier both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Antoine Lavoisier	Yes	No	No	No

chemist (noun)	Antoine Lavoisier (noun)
a scientist who specializes in chemistry	French chemist known as the father of modern chemistry; discovered oxygen and disproved the theory of phlogiston (1743-1794)
a health professional trained in the art of preparing and dispensing drugs