kinship vs marriage

kinship

noun
  • relation or connection by blood, marriage or adoption 

  • relation or connection by nature or character 

marriage

noun
  • The state of being married. 

  • The union of two people of opposite sex, to the exclusion of all others. 

  • A close union. 

  • In solitaire or patience games, the placing a card of the same suit on the next one above or below it in value. 

  • A union of two or more people that creates a family tie and carries legal, social, and/or religious rights and responsibilities. 

  • A wedding; a ceremony in which people wed. 

  • A king and a queen, when held as a hand in some versions of poker or melded in pinochle. 

  • A homosexual relationship between male prisoners. 

  • The union of only two people, to the exclusion of all others. 

  • A joining of two parts. 

  • My grandparents' marriage lasted for forty years. 

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