cancerous vs cancroid

cancerous

adj
  • Relating to or affected with cancer. 

  • Extremely unpleasant; detestable. 

  • Growing or spreading rapidly to the point of harm. 

cancroid

adj
  • Of or pertaining to cancer, especially to squamous cell carcinoma 

  • Resembling a crab 

noun
  • Squamous cell carcinoma 

  • Any disease that resembles cancer 

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