flair vs ingenuity

flair

noun
  • A natural or innate talent or aptitude. 

  • Distinctive style or elegance. 

verb
  • To add flair. 

ingenuity

noun
  • The ability to solve difficult problems, often in original, clever, and inventive ways. 

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