indefinite vs monotone

indefinite

adj
  • Being an integral without specified limits. 

  • Undecided or uncertain. 

  • 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. 

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

monotone

adj
  • Being, or having the salient properties of, a monotone function. 

  • Having a single unvaried pitch. 

noun
  • A piece of writing in one strain throughout. 

  • A single unvaried tone of speech or a sound. 

verb
  • To speak in a monotone. 

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