downtime vs vay-cay

downtime

noun
  • A period of time set aside for rest and relaxation; leisure time. 

  • The amount of time lost due to forces beyond one's control, as with a computer crash. 

vay-cay

noun
  • vacation 

How often have the words downtime and vay-cay occurred in a corpus of books? (source: Google Ngram Viewer )