frenzy vs lethargy

frenzy

noun
  • A state of wild activity or panic. 

  • A violent agitation of the mind approaching madness; rage. 

verb
  • To render frantic. 

  • To exhibit a frenzy, such as a feeding frenzy. 

lethargy

noun
  • A state of extreme torpor or apathy, especially with lack of emotion, energy or enthusiasm; (loosely) sluggishness, laziness. 

  • A condition characterized by extreme fatigue or drowsiness, deep unresponsiveness, or prolonged sleep patterns. 

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