Bartok vs composer

Bartok and composer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bartok	Yes	No	No	No
composer	Yes	No	No	No

Bartok (noun)	composer (noun)
Hungarian composer and pianist who collected Hungarian folk music; in 1940 he moved to the United States (1881-1945)	someone who composes music, usually as a profession