sluggishness vs weariness

sluggishness

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

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

weariness

noun
  • A lack of interest or excitement. 

  • Exhaustion, fatigue or tiredness. 

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