octavo vs eightvo

octavo and eightvo both are nouns.

Word	Noun	Adjective	Verb	Adverb
octavo	Yes	No	No	No
eightvo	Yes	No	No	No

As nouns, octavo and eightvo are synonyms defined as:

octavo and eightvo: the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves

Other synonyms of octavo include 8vo.

octavo (noun)	eightvo (noun)
the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves	the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves