shake down vs trouser

shake down

verb
  • To extort money from (someone) by means of threats. 

  • To shake someone so money falls from their pockets. 

  • To cause something to fall down by shaking it, or something it is attached to. 

  • To subject something to a shakedown test. 

  • To search exhaustively. 

trouser

verb
  • To secretively steal (an item or money) for personal use. 

  • To put (money) into one's trouser pocket; to pocket. 

  • To take and keep (something, especially money, that is not one's own); to pocket. 

noun
  • A pair of trousers. 

  • Of or relating to trousers. 

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