pretty penny vs swank

pretty penny

noun
  • A considerable amount of money; a high price or a high income. 

swank

noun
  • A fashionably elegant person. 

  • Ostentation; bravado. 

adj
  • Fashionably elegant, posh. 

verb
  • To swagger, to show off. 

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