cankered vs ulcerative

cankered

adj
  • Ulcerated 

  • Corrupted; morally corrupt 

  • bad-tempered 

  • Infected with a canker or having a cankerous part 

ulcerative

adj
  • Composed of, or causing ulcers 

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