blood red vs cruor

blood red

noun

  • A dark red colour. 

adj

  • Of a deep vivid red colour. 

cruor

noun

  • The colouring matter of the blood. 

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

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