remnant vs piece of cloth

remnant and piece of cloth both are nouns.

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

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

remnant: a piece of cloth that is left over after the rest has been used or sold
piece of cloth: a separate part consisting of fabric

Other hypernyms of remnant include piece of material.

remnant (noun)	piece of cloth (noun)
a piece of cloth that is left over after the rest has been used or sold	a separate part consisting of fabric
a small part or portion that remains after the main part no longer exists