flannel vs face cloth

flannel and face cloth both are nouns.

Word	Noun	Adjective	Verb	Adverb
flannel	Yes	No	No	No
face cloth	Yes	No	No	No

As nouns, flannel and face cloth are synonyms defined as:

flannel and face cloth: bath linen consisting of a piece of cloth used to wash the face and body

Other synonyms of flannel include washcloth, washrag.

flannel (noun)	face cloth (noun)
a soft light woolen fabric; used for clothing	bath linen consisting of a piece of cloth used to wash the face and body
bath linen consisting of a piece of cloth used to wash the face and body
(usually in the plural) trousers made of flannel or gabardine or tweed or white cloth