face cloth vs bath linen

face cloth and bath linen both are nouns.

Word	Noun	Adjective	Verb	Adverb
face cloth	Yes	No	No	No
bath linen	Yes	No	No	No

As nouns, bath linen is a hypernym of face cloth; that is, bath linen is a word with a broader meaning than face cloth:

face cloth: bath linen consisting of a piece of cloth used to wash the face and body
bath linen: linens for use in the bathroom

face cloth (noun)	bath linen (noun)
bath linen consisting of a piece of cloth used to wash the face and body	linens for use in the bathroom