effort vs toil

effort

verb
  • To make an effort. 

noun
  • An endeavor. 

  • The work involved in performing an activity; exertion. 

  • A force acting on a body in the direction of its motion. 

toil

verb
  • To struggle. 

  • To labour; work. 

  • To weary through excessive labour. 

  • To work (something); often with out. 

noun
  • Trouble, strife. 

  • Labour, work, especially of a grueling nature. 

  • A net or snare; any thread, web, or string spread for taking prey. 

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