renounce vs swear

renounce

verb
  • To surrender formally some right or trust. 

  • To cast off, repudiate. 

  • To abandon, forsake, discontinue (an action, habit, intention, etc), sometimes by open declaration. 

  • To fail to follow suit; playing a card of a different suit when having no card of the suit led. 

  • To make a renunciation of something. 

  • To give up, resign, surrender. 

  • To decline further association with someone or something, disown. 

noun
  • An act of renouncing. 

swear

verb
  • To take an oath, to promise intensely, solemnly, and/or with legally binding effect. 

  • To promise intensely that something is true; to strongly assert. 

  • To take an oath that an assertion is true. 

  • To use offensive, profane, or obscene language. 

  • To be lazy; rest for a short while during working hours. 

  • To administer an oath to (a person). 

noun
  • A swear word. 

  • A lazy time; a short rest during working hours (especially field labour); a siesta. 

adj
  • Dull; lazy; slow. 

  • Top-heavy; too high. 

  • Reluctant; unwilling. 

  • Heavy. 

  • Niggardly. 

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