posh vs top-flight

posh

adj
  • Associated with the upper classes. 

  • Stylish, elegant, exclusive (expensive). 

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

verb
  • To make posh, or posher. 

intj
  • An exclamation expressing derision. 

noun
  • fragments produced by an impact 

  • slush 

top-flight

adj
  • In the highest division 

  • Of the highest rank, or peak of excellence 

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