cf. vs equate

cf.

verb
  • Compare, compare to, compare with. 

  • see, see also 

equate

verb
  • To consider equal or equivalent. 

  • To set as equal. 

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

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