-gate vs cover-up

-gate

suffix
  • Combined with keywords to form the names of scandals. 

  • Used to form place names. 

cover-up

noun
  • An item of clothing to be worn over a swimsuit while not in the water. 

  • An attempt to conceal or disguise something, especially a wrongdoing or a mistake. 

How often have the words -gate and cover-up occurred in a corpus of books? (source: Google Ngram Viewer )