chemist vs Marie Curie

chemist and Marie Curie both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Marie Curie	Yes	No	No	No

chemist (noun)	Marie Curie (noun)
a scientist who specializes in chemistry	French chemist (born in Poland) who won two Nobel prizes; one (with her husband and Henri Becquerel) for research on radioactivity and another for her discovery of radium and polonium (1867-1934)
a health professional trained in the art of preparing and dispensing drugs