indolence vs slothfulness

indolence

noun
  • Habitual laziness or sloth. 

  • Lack of pain in a tumour. 

slothfulness

noun
  • The state or quality of being slothful. 

  • The result or product of being slothful. 

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