indisposition vs strength

indisposition

noun
  • A state of not being disposed to do something; disinclination; unwillingness. 

  • A bad mood or disposition. 

  • A mild illness, the state of being indisposed. 

strength

noun
  • The intensity of a force or power; potency. 

  • The quality or degree of being strong. 

  • The strongest part of something; that on which confidence or reliance is based. 

  • A positive attribute. 

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