painter vs Stuart Davis

painter and Stuart Davis both are nouns.

Word	Noun	Adjective	Verb	Adverb
painter	Yes	No	No	No
Stuart Davis	Yes	No	No	No

painter (noun)	Stuart Davis (noun)
large American feline resembling a lion	United States painter who developed an American version of cubism (1894-1964)
a line that is attached to the bow of a boat and used for tying up (as when docking or towing)
an artist who paints
a worker who is employed to cover objects with paint