fleeting vs thorough

fleeting

adj
  • Passing quickly; of short duration. 

thorough

adj
  • Utter; complete; absolute. 

  • Painstaking and careful not to miss or omit any detail. 

noun
  • A furrow between two ridges, to drain off the surface water. 

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