ceilidh vs electronic dance music

ceilidh

noun
  • An informal social gathering where traditional Irish or Scottish folk music is played, with dancing and storytelling. 

verb
  • To dance a ceilidh 

electronic dance music

noun
  • A field of modern popular music, encompassing house, techno and other genres of percussive dance music. 

How often have the words ceilidh and electronic dance music occurred in a corpus of books? (source: Google Ngram Viewer )