frivolous vs tart

frivolous

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

  • 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. 

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

tart

adj
  • Sharp; keen; severe. 

  • Sharp to the taste; acid; sour. 

  • high or too high in acidity. 

noun
  • Any woman with loose sexual morals. 

  • A prostitute. 

  • A melt (block of wax for use in a tart burner). 

  • A type of small open pie, or piece of pastry, containing jelly or conserve; a sort of fruit pie. 

verb
  • To practice prostitution. 

  • To practice promiscuous sex. 

  • To dress garishly, ostentatiously, whorishly, or sluttily. 

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