confound vs psych

confound

verb
  • To cause to be ashamed; to abash. 

  • To combine in a confused fashion; to mingle so as to make the parts indistinguishable. 

  • To stun or amaze. 

  • To make something worse. 

  • To defeat, to frustrate, to thwart. 

  • To fail to see the difference; to mix up; to confuse right and wrong. 

  • To perplex or puzzle. 

noun
  • A confounding variable. 

psych

verb
  • To intimidate (someone) emotionally or using psychology (also psych out). 

  • To put (someone) into a required psychological frame of mind (also psych up). 

  • To treat (someone) using psychoanalysis. 

intj
  • Indicating that one's preceding statement was false and that one has successfully fooled one's interlocutor. 

adj
  • Psychiatric. 

  • Psychedelic. 

noun
  • Psychology or psychiatry. 

  • A psychologist; a psychiatrist. 

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