chemist vs Karl Scheele

chemist and Karl Scheele both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Karl Scheele	Yes	No	No	No

chemist (noun)	Karl Scheele (noun)
a scientist who specializes in chemistry	Swedish chemist (born in Germany) who discovered oxygen before Priestley did (1742-1786)
a health professional trained in the art of preparing and dispensing drugs