desist vs knock it off

desist

verb
  • To cease to proceed or act; to stop (often with from). 

knock it off

verb
  • To cease doing something, particulary annoying or unpleasant; to desist. 

intj
  • Cease doing something, particularly annoying or unpleasant; desist. 

How often have the words desist and knock it off occurred in a corpus of books? (source: Google Ngram Viewer )