composer vs Pyotr Ilych Tchaikovsky

composer and Pyotr Ilych Tchaikovsky both are nouns.

Word	Noun	Adjective	Verb	Adverb
composer	Yes	No	No	No
Pyotr Ilych Tchaikovsky	Yes	No	No	No

composer (noun)	Pyotr Ilych Tchaikovsky (noun)
someone who composes music, usually as a profession	important Russian composer whose works are noted for their expressive melodies (1840-1893)