chemist vs Madame Curie

chemist and Madame Curie both are nouns.

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

chemist (noun)	Madame 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