chemist vs Edward Williams Morley

chemist and Edward Williams Morley both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
Edward Williams Morley	Yes	No	No	No

chemist (noun)	Edward Williams Morley (noun)
a scientist who specializes in chemistry	United States chemist and physicist who collaborated with Michelson in the Michelson-Morley experiment (1838-1923)
a health professional trained in the art of preparing and dispensing drugs