sextuplet vs hexad

sextuplet and hexad both are nouns.

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

As nouns, sextuplet and hexad are synonyms defined as:

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

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

sextuplet (noun)	hexad (noun)
the cardinal number that is the sum of five and one	the cardinal number that is the sum of five and one