afternoon tea vs hors d'oeuvre

afternoon tea

noun
  • A formal afternoon meal comprising light snacks, accompanied by tea. 

  • A small meal or snack eaten between lunch and dinner (supper); a period of time set aside for this purpose, taken as a break from work or from a conference. 

hors d'oeuvre

noun
  • A small, light, and usually savory first course in a meal. 

  • Anything of secondary concern; not the primary thing. 

How often have the words afternoon tea and hors d'oeuvre occurred in a corpus of books? (source: Google Ngram Viewer )