folio vs leaf

folio

noun
  • A page of a book, that is, one side of a leaf of a book. 

  • A page in an account book; sometimes, two opposite pages bearing the same serial number. 

  • A book made of sheets of paper each folded in half (two leaves or four pages to the sheet); hence, a book of the largest kind, exceeding 30 cm in height. 

  • A page number. The even folios are on the left-hand pages and the odd folios on the right-hand pages. 

  • A wrapper for loose papers. 

  • a leaf of a book or manuscript 

  • A sheet of paper folded in half. 

verb
  • to put a serial number on each folio or page of (a book); to page 

leaf

noun
  • A sheet of a book, magazine, etc (consisting of two pages, one on each face of the leaf). 

  • Anything resembling the leaf of a plant. 

  • A flat section used to extend the size of a table. 

  • One of the teeth of a pinion, especially when small. 

  • The layer of fat supporting the kidneys of a pig, leaf fat. 

  • A Canadian person. 

  • The usually green and flat organ that represents the most prominent feature of most vegetative plants. 

  • A moveable panel, e.g. of a bridge or door, originally one that hinged but now also applied to other forms of movement. 

  • A sheet of any substance beaten or rolled until very thin. 

  • A foliage leaf or any of the many and often considerably different structures it can specialise into. 

  • Tea leaves. 

  • In a tree, a node that has no descendants. 

  • Cannabis. 

verb
  • To divide (a vegetable) into separate leaves. 

  • To produce leaves; put forth foliage. 

How often have the words folio and leaf occurred in a corpus of books? (source: Google Ngram Viewer )