composer vs William Christopher Handy

composer and William Christopher Handy both are nouns.

Word	Noun	Adjective	Verb	Adverb
composer	Yes	No	No	No
William Christopher Handy	Yes	No	No	No

composer (noun)	William Christopher Handy (noun)
someone who composes music, usually as a profession	United States blues musician who transcribed and published traditional blues music (1873-1958)