remnant vs remainder

remnant and remainder both are nouns.

Word	Noun	Adjective	Verb	Adverb
remnant	Yes	No	No	No
remainder	Yes	No	Yes	No

As nouns, remnant and remainder are synonyms defined as:

remnant and remainder: a piece of cloth that is left over after the rest has been used or sold

Other synonyms of remnant include end, oddment.

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

remnant: a small part or portion that remains after the main part no longer exists
remainder: something left after other parts have been taken away

Other hypernyms of remnant include balance, residual, residue, residuum, rest.

remnant (noun)	remainder (noun)
a piece of cloth that is left over after the rest has been used or sold	a piece of cloth that is left over after the rest has been used or sold
a small part or portion that remains after the main part no longer exists	the number that remains after subtraction; the number that when added to the subtrahend gives the minuend
	the part of the dividend that is left over when the dividend is not evenly divisible by the divisor
	something left after other parts have been taken away

remnant (verb)	remainder (verb)
	sell cheaply as remainders