decisive vs shilly-shallying

decisive

adj
  • Marked by promptness and decision. 

  • Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive. 

shilly-shallying

noun
  • The action of the verb 

How often have the words decisive and shilly-shallying occurred in a corpus of books? (source: Google Ngram Viewer )