triple vs triplet

triple and triplet both are nouns.

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

As nouns, triple and triplet are synonyms defined as:

Other synonyms of triple include triad, trio.

triple (noun)	triplet (noun)
a base hit at which the batter stops safely at third base	a set of three similar things considered as a unit
a quantity that is three times as great as another	one of three offspring born at the same time from the same pregnancy
a set of three similar things considered as a unit	the cardinal number that is the sum of one and one and one

triple (adjective)	triplet (adjective)
having three units or components or elements
three times as great or many

triple (verb)	triplet (verb)
increase threefold
hit a three-base hit