sestet vs sextuplet

sestet and sextuplet both are nouns.

Word	Noun	Adjective	Verb	Adverb
sestet	Yes	No	No	No
sextuplet	Yes	No	No	No

As nouns, sestet and sextuplet are synonyms defined as:

sestet and sextuplet: the cardinal number that is the sum of five and one

Other synonyms of sestet include 6, Captain Hicks, half a dozen, hexad, sextet, sise, six, sixer, VI.

sestet (noun)	sextuplet (noun)
a musical composition written for six performers	the cardinal number that is the sum of five and one
a rhythmic group of six lines of verse
a set of six similar things considered as a unit
six performers or singers who perform together
the cardinal number that is the sum of five and one