poet-singer vs folk singer

poet-singer and folk singer both are nouns.

Word	Noun	Adjective	Verb	Adverb
poet-singer	Yes	No	No	No
folk singer	Yes	No	No	No

As nouns, poet-singer and folk singer are synonyms defined as:

Other synonyms of poet-singer include jongleur, minstrel, troubadour.

poet-singer (noun)	folk singer (noun)
a singer of folk songs	a singer of folk songs