enslave vs tire

enslave

verb
  • To make subservient; to strip one of freedom; enthrall. 

tire

noun
  • A covering for the head; a headdress. 

  • A tier, row, or rank. 

  • A child's apron covering the upper part of the body, and tied with tape or cord; a pinafore. Also tier. 

verb
  • To bore. 

  • To become sleepy or weary. 

  • To make sleepy or weary. 

  • To become bored or impatient (with). 

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