equate vs level up

equate

verb
  • To set as equal. 

  • To consider equal or equivalent. 

noun
  • A statement in assembly language that defines a symbol having a particular value. 

level up

verb
  • To raise to the same level or status; to improve so as to make as good as others. 

  • To progress to the next level of player character stats and abilities, often by acquiring experience points in role-playing games. 

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