emotion vs ratiocination

emotion

noun
  • 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. 

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

ratiocination

noun
  • Reasoning, conscious deliberate inference; the activity or process of reasoning. 

  • Thought or reasoning that is exact, valid and rational. 

  • A proposition arrived at by such thought. 

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