indoctrinator vs prime mover

indoctrinator

noun
  • One who indoctrinates. 

prime mover

noun
  • A person or thing that is seminal and influential. 

  • The front part of a semi-trailer type truck, i.e., the tractor to which the trailer part attaches. 

  • A military or heavy construction vehicle. 

  • The initial agent that is the cause of all things. 

  • A machine, such as a water wheel or steam engine, that receives and modifies energy as supplied by some natural source or fuel and transforms it into mechanical work 

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