civil union vs consortium

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. 

consortium

noun
  • The right of a spouse to all the normal relationships with his or her mate. 

  • A group of symbiotic microbes. 

  • An association or combination of businesses, financial institutions, or investors, for the purpose of engaging in a joint venture. 

  • An association or society. 

  • A similar arrangement among non-commercial institutions or organizations. 

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