extravagance vs highlife

extravagance

noun
  • Prodigality, as of anger, love, expression, imagination, or demands. 

  • Excessive or superfluous expenditure of money. 

highlife

noun
  • A work or performance in this style. 

  • A genre of music that originated in Ghana in the early 20th century, blending elements of traditional Akan music with Western instruments and ideas. 

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