employ vs manipulate

employ

verb
  • To use (somebody for a job, or something for a task). 

  • To hire (somebody for work or a job). 

  • To make busy. 

noun
  • The state of being an employee; employment. 

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 employ and manipulate occurred in a corpus of books? (source: Google Ngram Viewer )