arousal vs assurance

arousal

noun
  • The act of arousing or the state of being aroused. 

  • A physiological and psychological state of being awake or reactive to stimuli, including elevated heart rate and blood pressure and a condition of sensory alertness, mobility and readiness to respond. 

  • Arousal from sleep or hibernation. 

  • Sexual arousal. 

assurance

noun
  • The act of assuring; a declaration tending to inspire full confidence; something designed to give confidence. 

  • Subjective certainty of one's salvation. 

  • Firmness of mind; undoubting steadiness; intrepidity; courage; confidence; self-reliance. 

  • Insurance; a contract for the payment of a sum on occasion of a certain event, as loss or death. Assurance is used in relation to life contingencies, and insurance in relation to other contingencies. It is called temporary assurance, in the time within which the contingent event must happen is limited. 

  • The state of being assured; total confidence or trust; a lack of doubt; certainty. 

  • Excessive boldness; impudence; audacity 

  • Any written or other legal evidence of the conveyance of property; a conveyance; a deed. 

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