consort vs consortium

consort

noun
  • Association or partnership. 

  • The spouse of a monarch. 

  • A ship accompanying another. 

  • A group or company, especially of musicians playing the same type of instrument. 

  • A husband, wife, companion or partner. 

  • An informal, usually well-publicized sexual companion of a monarch, aristocrat, celebrity, etc. 

verb
  • To be in agreement. 

  • To associate or keep company (with). 

adj
  • of a title, by virtue of one's (living) spouse; often contrasted with regnant and dowager 

consortium

noun
  • An association or society. 

  • A group of symbiotic microbes. 

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

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

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

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