confuse vs discern

confuse

verb
  • To be confused. 

  • to puzzle, perplex, baffle, bewilder (somebody); to afflict by being complicated, contradictory, or otherwise difficult to understand 

  • To mix up, muddle up (one thing with another); to mistake (one thing for another). 

  • To mix thoroughly; to confound; to disorder. 

discern

verb
  • To perceive differences. 

  • To distinguish something as being different from something else; to differentiate. 

  • To perceive, recognize, or comprehend with the mind; to descry. 

  • To detect with the senses, especially with the eyes. 

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