doing vs downtime

doing

intj
  • The sound made by an elastic object when struck by or striking a hard object. 

noun
  • A deed or action, especially when somebody is held responsible for it. 

downtime

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

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

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