flirtation vs philandering

flirtation

noun
  • Playing at courtship; coquetry. 

  • An instance of flirting. 

  • A period of experimentation with or interest in a particular idea or activity. 

philandering

noun
  • The action of one who philanders. 

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