frivolous vs streetwise

frivolous

adj
  • Having no reasonable prospect of success because its claim is without merit, lacking a supporting legal or factual basis, while the filing party is, or should be, aware of this. 

  • Of little weight or importance; not worth notice; slight; trivial. 

  • Silly, especially at an inappropriate time or in an inappropriate manner. 

streetwise

adj
  • Having the necessary knack, personality and instinct for survival in rough, urban environments. 

  • Possessing a style that embodies the life and microculture located within urban settings, typically in the States. 

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