dispenser vs slanger

dispenser

noun
  • Something or someone that dispenses things. 

  • A person who makes up prescriptions, such as an optician or pharmacist. 

  • An object used to dispense other items. 

slanger

noun
  • A person who speaks or writes slang. 

  • A drug dealer, especially one working as part of a network of criminals. 

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