provocation vs tormenting

provocation

noun
  • Something that provokes; a provocative act 

  • The second step in OPQRST regarding the investigation of what makes the symptoms MOI or NOI improve or deteriorate. 

  • The act of provoking, inciting or annoying someone into doing something 

tormenting

noun
  • The act by which somebody is tormented. 

adj
  • Involving or causing torment. 

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