cancroid vs polyp

cancroid

noun
  • Squamous cell carcinoma 

  • Any disease that resembles cancer 

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

  • Resembling a crab 

polyp

noun
  • A cylindrical coelenterate, such as the hydra, having a mouth surrounded with tentacles. 

  • An abnormal growth protruding from a mucous membrane. 

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