nail it vs slow down

nail it

verb
  • Synonym of hit the nail on the head 

  • Used other than figuratively or idiomatically: see nail, it. 

slow down

verb
  • To reduce the velocity, speed, or tempo of something. 

  • To decelerate. 

How often have the words nail it and slow down occurred in a corpus of books? (source: Google Ngram Viewer )