courtship vs solicitation

courtship

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

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

  • 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. 

solicitation

noun
  • the action or instance of soliciting; petition; proposal 

  • an inchoate offense that consists of a person offering money or inducing another to commit a crime with the specific intent that the person solicited commit the crime 

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