coherence vs vagueness

coherence

noun
  • A semantic relationship between different parts of the same text. 

  • The property of having the same wavelength and phase. 

  • A logical arrangement of parts, as in writing. 

  • The quality of cohering, or being coherent; internal consistency. 

  • The quality of forming a unified whole. 

vagueness

noun
  • Something which is vague, or an instance or example of vagueness. 

  • The condition of being unclear; vague. 

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