bento vs breadbox

bento

noun
  • A Japanese takeaway lunch served in a box, often with the food arranged into an elaborate design. 

  • A menu icon of nine squares in a grid. 

breadbox

noun
  • a container for storing bread or other baked goods to keep them fresh 

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