clear as a bell vs indefinite

clear as a bell

adj
  • Totally clear; distinct and unmistakeable, as a bell's tone is clearly heard. 

indefinite

noun
  • A word or phrase that designates an unspecified or unidentified person or thing or group of persons or things. 

adj
  • Undecided or uncertain. 

  • Being an integral without specified limits. 

  • Vague or unclear. 

  • Designating an unspecified or unidentified person or thing or group of persons or things 

  • Without limit; forever, or until further notice; not definite. 

How often have the words clear as a bell and indefinite occurred in a corpus of books? (source: Google Ngram Viewer )