bloodshed vs hematoma

bloodshed

noun
  • The shedding or spilling of blood. 

  • A slaughter; destruction of life, notably on a large scale. 

hematoma

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

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