ternary vs treble

ternary and treble both are nouns.

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

As adjectives, ternary and treble are synonyms defined as:

Other synonyms of ternary include triple, triplex.

ternary (noun)	treble (noun)
the cardinal number that is the sum of one and one and one	the pitch range of the highest female voice

ternary (adjective)	treble (adjective)
having three units or components or elements	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

ternary (verb)	treble (verb)
	increase threefold
	sing treble