tercet vs triplet

tercet and triplet both are nouns.

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

As nouns, tercet and triplet are synonyms defined as:

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

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

tercet (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