laceration vs scratch comma

laceration

noun
  • The act of lacerating or tearing. 

  • An irregular open wound caused by a blunt impact to soft tissue. 

scratch comma

noun
  • Synonym of slash ⟨ / ⟩ in its former use as a form of comma. 

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