emotion vs fever

emotion

noun
  • A reaction by a non-human organism with behavioral and physiological elements similar to a person's response. 

  • A person's internal state of being and involuntary physiological response to an object or a situation, based on or tied to physical state and sensory data. 

fever

noun
  • A higher than normal body temperature of a person (or, generally, a mammal), usually caused by disease. 

  • A group of stingrays. 

  • A state of excitement or anxiety. 

  • Any of various diseases. 

verb
  • To become fevered. 

  • To put into a fever; to affect with fever. 

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