8vo vs eightvo

8vo and eightvo both are nouns.

Word	Noun	Adjective	Verb	Adverb
8vo	Yes	No	No	No
eightvo	Yes	No	No	No

As nouns, 8vo and eightvo are synonyms defined as:

8vo 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 8vo include octavo.

8vo (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