sonneteer vs poet

sonneteer and poet both are nouns.

Word	Noun	Adjective	Verb	Adverb
sonneteer	Yes	No	No	No
poet	Yes	No	No	No

As nouns, poet is a hypernym of sonneteer; that is, poet is a word with a broader meaning than sonneteer:

sonneteer: a poet who writes sonnets
poet: a writer of poems (the term is usually reserved for writers of good poetry)

sonneteer (noun)	poet (noun)
a poet who writes sonnets	a writer of poems (the term is usually reserved for writers of good poetry)