medley vs olio

medley

noun
  • A collection of related songs played or mixed together as a single piece. 

  • A collection or mixture of miscellaneous things. 

  • A competitive swimming event that combines the four strokes of butterfly, backstroke, breaststroke, and freestyle. 

  • A cloth of mixed colours. 

verb
  • To combine, to form a medley. 

olio

noun
  • A collection of various musical, theatrical or other artistic works; a miscellany. 

  • A rich, thick, Spanish stew consisting of meat and vegetables. 

  • A medley or mixture; a hotchpotch. 

  • Vaudeville or similar miscellaneous musical or theatrical entertainment skits presented between the main acts of burlesque or minstrel shows. 

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