posh vs spiff

posh

verb
  • To make posh, or posher. 

intj
  • An exclamation expressing derision. 

adj
  • Associated with the upper classes. 

  • Stylish, elegant, exclusive (expensive). 

  • Snobbish, materialistic, prejudiced, under the illusion that one is better than everyone else. 

noun
  • fragments produced by an impact 

  • slush 

spiff

verb
  • (usually with up or out) To make spiffy (attractive, polished, or up-to-date) 

  • To reward (a salesperson) with a spiff or bonus. 

  • To throw; to heave. 

  • To attach a spiff or bonus to the selling of (a product) 

noun
  • Attractiveness or charm in dress, appearance, or manner. 

  • A bonus or other remuneration, given for reaching a sales goal or promoting the goods of a particular manufacturer. Originally from textile retailing, a percentage given for selling off surplus or out-of-fashion stock, of which the sales person could offer part as a discount to a customer. 

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