put the brakes on vs slam on the anchors

put the brakes on

verb
  • To cease to perform one's current activity or to decrease one's level of activity. 

  • To stop (an event, action, or process) or to slow it down. 

slam on the anchors

How often have the words put the brakes on and slam on the anchors occurred in a corpus of books? (source: Google Ngram Viewer )