pressor vs vasopressor

pressor

noun
  • Synonym of vasopressor 

adj
  • Synonym of vasopressor 

vasopressor

noun
  • An agent that causes such constriction: a medication that tends to increase blood pressure. 

adj
  • Of or relating to the constriction of blood vessels, which usually causes a rise in blood pressure. 

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