cumshaw vs throw down

cumshaw

verb
  • To give or make a present to. 

noun
  • A gratuity or tip as thanks for a service 

throw down

verb
  • to accomplish or produce something in a grand, respectable, or successful manner; to "represent". 

  • to produce or perform (something) admirably or forcefully. 

  • to make an individual contribution to a group effort (e.g. money pool, collaborative record album) 

  • to fight, incite to fight, or approach with the intent to fight; to make a stand. 

  • to drink a large amount quickly. 

  • To cause something one is holding to drop, often forcefully. 

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