bank holiday vs half-term

bank holiday

noun
  • A weekday, often a Monday, on which most businesses are closed, and granted to workers as a national holiday. 

  • A closure of banks in a jurisdiction to curtail or prevent a bank run. 

half-term

adj
  • Pertaining to the half term school holiday. 

How often have the words bank holiday and half-term occurred in a corpus of books? (source: Google Ngram Viewer )