cram vs refresh one's memory of

cram

verb
  • To fill with food to satiety; to stuff. 

  • To press, force, or drive, particularly in filling, or in thrusting one thing into another; to stuff; to fill to superfluity. 

  • To study hard; to swot. 

  • To eat greedily, and to satiety; to stuff oneself. 

  • To put hastily through an extensive course of memorizing or study, as in preparation for an examination. 

noun
  • A warp having more than two threads passing through each dent or split of the reed. 

  • Information hastily memorized. 

  • A small friendship book with limited space for people to enter their information. 

  • The act of cramming (forcing or stuffing something). 

  • A mathematical board game in which players take turns placing dominoes horizontally or vertically until no more can be placed, the loser being the player who cannot continue. 

refresh one's memory of

How often have the words cram and refresh one's memory of occurred in a corpus of books? (source: Google Ngram Viewer )