roughness vs savagery

roughness

noun
  • The property of being rough, coarseness. 

  • A measure of how rough something is, such as a surface 

  • Abundance, especially of food. 

  • Roughage; coarse fodder. 

  • Something that is rough; a rough spot. 

savagery

noun
  • Savage or brutal behaviour; barbarity. 

  • Wild growth of plants. 

  • A violent act of cruelty. 

  • Savages collectively; the world of savages. 

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