civil union vs dowry

civil union

noun
  • A legal union similar to marriage, established to allow same-sex couples (and, in some jurisdictions, opposite-sex couples) rights similar to those married couples have. 

dowry

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

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

  • A natural gift or talent. 

verb
  • To bestow a dowry upon. 

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