exhaustion vs sluggishness

exhaustion

noun
  • Supreme tiredness; having exhausted energy. 

  • An exhaustive procedure 

  • The point of complete depletion, of the state of being used up. 

sluggishness

noun
  • The property of being sluggish, unable or unwilling to act quickly. 

  • The state of economic decline, inactivity, slow or subnormal growth. 

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