courtship vs flirtation

courtship

noun
  • The behaviour exhibited by an animal to attract a mate. 

  • The act of trying to solicit a favour or support from someone. 

  • The act of wooing a person to enter into a romantic relationship or marriage; hence, the period during which a couple fall in love before their marriage. 

flirtation

noun
  • Playing at courtship; coquetry. 

  • An instance of flirting. 

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

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