arousal vs moderation

arousal

noun
  • 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. 

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

  • Arousal from sleep or hibernation. 

  • Sexual arousal. 

moderation

noun
  • The state or quality of being moderate; avoidance of extremes 

  • An instance of moderating: bringing something away from extremes, especially in a beneficial way 

  • The process of moderating a discussion 

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