poet vs bard

poet and bard both are nouns.

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

As nouns, bard is a hyponym of poet; that is, bard is a word with a more specific, narrower meaning than poet:

poet: a writer of poems (the term is usually reserved for writers of good poetry)
bard: a lyric poet

Other hyponyms of poet include elegist, odist, poetess, poet laureate, poet laureate, sonneteer.

poet (noun)	bard (noun)
a writer of poems (the term is usually reserved for writers of good poetry)	an ornamental caparison for a horse
	a lyric poet

poet (verb)	bard (verb)
	put a caparison on