slothfulness vs sluggishness

slothfulness

noun
  • The state or quality of being slothful. 

  • The result or product of being slothful. 

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 slothfulness and sluggishness occurred in a corpus of books? (source: Google Ngram Viewer )