eighter from Decatur vs octad

eighter from Decatur and octad both are nouns.

Word	Noun	Adjective	Verb	Adverb
eighter from Decatur	Yes	No	No	No
octad	Yes	No	No	No

As nouns, eighter from Decatur and octad are synonyms defined as:

eighter from Decatur and octad: the cardinal number that is the sum of seven and one

Other synonyms of eighter from Decatur include 8, eight, eighter, octet, octonary, ogdoad, VIII.

eighter from Decatur (noun)	octad (noun)
the cardinal number that is the sum of seven and one	the cardinal number that is the sum of seven and one