tumor vs verruca

tumor

noun
  • An abnormal growth; differential diagnosis includes abscess, metaplasia, and neoplasia. 

verruca

noun
  • A sexine element similar to a wart. 

  • A wart, especially one that grows on the foot, caused by a human papilloma virus. 

  • A rounded projection or wart. 

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