folio

nouns

the system of numbering pages

folio, page number, pagination, paging

a sheet of any written or printed material (especially in a manuscript or book)

folio, leaf

a book (or manuscript) consisting of large sheets of paper folded in the middle to make two leaves or four pages

"the first folio of Shakespeare's plays"

folio

is a type of (narrower)

physical objects consisting of a number of pages bound together

"he used a large book as a doorstop"