barn dance vs ceilidh

barn dance

verb
  • To take part in barn dancing. 

noun
  • A type of set step routine dancing, such as square dance. 

ceilidh

verb
  • To dance a ceilidh 

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

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