liner vs piece of cloth

liner and piece of cloth both are nouns.

Word	Noun	Adjective	Verb	Adverb
liner	Yes	No	No	No
piece of cloth	Yes	No	No	No

As nouns, piece of cloth is a hypernym of liner; that is, piece of cloth is a word with a broader meaning than liner:

Other hypernyms of liner include piece of material.

liner (noun)	piece of cloth (noun)
(baseball) a hit that flies straight out from the batter	a separate part consisting of fabric
a large commercial ship (especially one that carries passengers on a regular schedule)
a piece of cloth that is used as the inside surface of a garment
a protective covering that protects an inside surface