stuttering vs sureness

stuttering

noun

  • An instance of stuttering. 

  • A speech disorder in which the flow of speech is disrupted by involuntary repetitions and prolongations of sounds, syllables, words or phrases, and by involuntary silent pauses or blocks in which the stutterer is unable to produce sounds. 

adj

  • Hesitant. 

  • That stutters. 

sureness

noun

  • The property of being sure, deft, confident of ability. 

  • The property of being sure, certainty. 

  • The result or product of being sure. 

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