cruor vs hematoma

cruor

noun
  • The clotted portion of coagulated blood, containing the colouring matter; gore. 

  • The colouring matter of the blood. 

hematoma

noun
  • A swelling of blood, usually clotted, which forms as a result of broken blood vessels. 

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