ternary vs triplet

ternary and triplet both are nouns.

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

As nouns, ternary and triplet are synonyms defined as:

ternary and triplet: the cardinal number that is the sum of one and one and one

Other synonyms of ternary include 3, deuce-ace, III, leash, tercet, ternion, terzetto, three, threesome, tierce, trey, triad, trine, trinity, trio, troika.

ternary (noun)	triplet (noun)
the cardinal number that is the sum of one and one and one	a set of three similar things considered as a unit
	one of three offspring born at the same time from the same pregnancy
	the cardinal number that is the sum of one and one and one

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