Quaker vs quake

Quaker

noun
  • One who plays any Quake games. 

  • A believer of the Quaker faith and a member of the Society of Friends, known for their pacifist views. 

quake

noun
  • An earthquake, a trembling of the ground with force. 

  • A trembling or shaking. 

verb
  • To tremble or shake. 

  • To be in a state of fear, shock, amazement, etc., such as might cause one to tremble. 

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