poet vs Gaius Valerius Catullus

poet and Gaius Valerius Catullus both are nouns.

Word	Noun	Adjective	Verb	Adverb
poet	Yes	No	No	No
Gaius Valerius Catullus	Yes	No	No	No

poet (noun)	Gaius Valerius Catullus (noun)
a writer of poems (the term is usually reserved for writers of good poetry)	Roman lyric poet remembered for his love poems to an aristocratic Roman woman (84-54 BC)