brittleness vs helplessness

brittleness

noun
  • The state of being brittle; aptness to break; fragility. 

  • The property by virtue of which a material is fractured without appreciable deformation by the application of load. 

helplessness

noun
  • The state of being helpless. 

  • A feeling of inadequacy or impotence. 

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