offsetting vs revision

offsetting

noun
  • The act of offsetting 

  • An amount offset 

revision

noun
  • The action or process of reviewing, editing and amending. 

  • A story corrected or expanded by a writer commissioned by the original author. 

  • The action or process of reviewing something previously learned, especially one′s notes in preparation for a test or examination. 

  • A changed edition, or new version; a modification. 

verb
  • To provide with a new vision. 

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