courtship vs engagement

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. 

engagement

noun
  • The period of time when marriage is planned or promised. 

  • The point at which the fencers are close enough to join blades, or to make an effective attack during an encounter. 

  • Connection or attachment. 

  • The feeling of being compelled, drawn in, connected to what is happening, interested in what will happen next. 

  • An appointment, especially to speak or perform. 

  • In any situation of conflict, an actual instance of active hostilities. 

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