definite vs well-grounded

definite

adj
  • Determined; resolved; decided. 

  • Having distinct limits. 

  • Designating an identified or immediately identifiable person or thing, or group of persons or things 

  • Free from any doubt. 

noun
  • A word or phrase that designates a specified or identified person or entity. 

well-grounded

adj
  • Of an argument, etc.: based on good judgment and solid reasoning. 

  • Of a person: having extensive knowledge of a subject. 

How often have the words definite and well-grounded occurred in a corpus of books? (source: Google Ngram Viewer )