inertness vs languorousness

inertness

noun
  • Quality of being unreactive with other chemical compounds or elements. 

  • Absence of the power of self-motion; inertia. 

  • Lack of activity or exertion; habitual indisposition to action or motion 

languorousness

noun
  • The quality of being languorous. 

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