multiply vs treble

multiply is not a noun while treble is a noun.

Word	Noun	Adjective	Verb	Adverb
multiply	No	No	Yes	Yes
treble	Yes	Yes	Yes	No

As verbs, treble is a hyponym of multiply; that is, treble is a word with a more specific, narrower meaning than multiply:

Other hyponyms of multiply include double, duplicate, triple, quadruple, quintuple, proliferate.

multiply (noun)	treble (noun)
	the pitch range of the highest female voice

multiply (adjective)	treble (adjective)
	having or denoting a high range
	three times as great or many
	having three units or components or elements
	having more than one decidedly dissimilar aspects or qualities

multiply (verb)	treble (verb)
have young (animals) or reproduce (organisms)	increase threefold
have offspring or produce more individuals of a given animal or plant	sing treble
combine or increase by multiplication
make multiple copies of
combine by multiplication

multiply (adverb)	treble (adverb)
in several ways; in a multiple manner