asthenic vs inactive

asthenic

noun
  • A person who has asthenia. 

adj
  • Characterized by, or pertaining to, debility; weak; debilitating. 

inactive

noun
  • A person who does not take action. 

adj
  • Showing no optical activity in polarized light. 

  • Retired from duty or service. 

  • Not engaging in physical activity. 

  • Relatively inert. 

  • Not functioning or operating; broken down 

  • Not active, temporarily or permanently. 

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