espousal vs matrimony

espousal

noun
  • A wedding ceremony. 

  • Adoption of a plan, cause, or idea. 

  • A betrothal. 

matrimony

noun
  • The ceremony of marriage. 

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

  • Marriage; the state of being married. 

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