cover-up vs fib

cover-up

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

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

fib

noun
  • A lie, especially one that is more or less inconsequential. 

  • A liar. 

  • The fibula. 

  • A kind of experimental poem where the number of syllables in each line is the next succeeding Fibonacci number. 

verb
  • To lie, especially more or less inconsequentially. 

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