manhandle vs manipulate

manhandle

verb
  • To control (a machine, vehicle, situation, etc.) by means of physical strength. 

  • To mishandle; to handle roughly; to mangle. 

  • To move something heavy by force of men, without aid of levers, pulleys, machine, or tackles. 

  • To assault or beat up a person. 

manipulate

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

  • 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 

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