paging vs verso

paging

noun
  • The arrangement of pages in a book or other publication. 

  • A transfer of pages between main memory and an auxiliary store, such as hard disk drive. 

verso

noun
  • The left-hand page of a book of a script which reads from left to right, usually having an even page number. 

  • The back side of a flat object which is to be examined visually, as for reading, such as a sheet, leaf, coin or medal; 

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