courtship vs dating

courtship

noun
  • 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. 

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

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

dating

noun
  • A form of romantic courtship typically between two individuals with the aim of assessing the other's suitability as a partner in an intimate relationship or as a spouse. 

  • An estimation of the age of an artifact, biological vestige, linguistic usage, etc. 

  • The setting of a date on which an event or transaction is to take place or take effect. 

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