endeavor vs ettle

endeavor

verb
  • To attempt through application of effort (to do something); to try strenuously. 

  • To work with purpose. 

noun
  • A sincere attempt; a determined or assiduous effort towards a specific goal; assiduous or persistent activity. 

ettle

verb
  • To aim; purpose; intend; attempt; try. 

  • To make attempt. 

  • To take aim. 

  • To expect; reckon; count on. 

  • To direct one's course. 

  • To aspire; be ambitious. 

noun
  • Intention; intent; aim. 

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