matrimony vs membership

matrimony

noun
  • A particular solitaire card game using two decks of cards. 

  • Marriage; the state of being married. 

  • The ceremony of marriage. 

membership

noun
  • The state of being a member of a group or organization. 

  • The body of members of an organization. 

  • The fact of being a member of a set. 

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