cf. vs equal

cf.

verb
  • Compare, compare to, compare with. 

  • see, see also 

equal

verb
  • To be equal to, to have the same value as; to correspond to. 

  • To make equivalent to; to cause to match. 

  • To have as its consequence. 

noun
  • A person or thing of equal status to others. 

adj
  • Intended for voices of one kind only, either all male or all female; not mixed. 

  • Adequate; sufficiently capable or qualified. 

  • The same in all respects. 

  • Exactly identical, having the same value. 

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