dowry vs shotgun wedding

dowry

noun
  • Payment by the groom or his family to the bride's family: bride price. 

  • A natural gift or talent. 

  • Payment, such as property or money, paid by the bride's family to the groom or his family at the time of marriage. 

verb
  • To bestow a dowry upon. 

shotgun wedding

noun
  • A wedding in which the bride is already pregnant. 

  • Any similarly reputedly forced partnership, between people, organizations, components, or concepts. 

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