depressant vs incitement

depressant

noun
  • A pharmacological substance which decreases neuronal or physiological activity. 

  • An agent that inhibits the flotation of a mineral or minerals. 

adj
  • reducing functional or nervous activity. 

incitement

noun
  • A call to act; encouragement to act, often in an illegal fashion. 

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