abstain vs manipulate

abstain

verb
  • Deliberately refrain from casting one's vote at a meeting where one is present. 

  • Refrain from (something or doing something); keep from doing, especially an indulgence. 

manipulate

verb
  • To influence or control someone in order to achieve a specific purpose, especially one that is unknown to the one being manipulated and beneficial to the manipulator; to use 

  • To move, arrange or operate something using the hands 

  • To handle and move a body part, either as an examination or for a therapeutic purpose 

  • To influence, manage, direct, control or tamper with something 

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