coherence

Short definition from Wiktionary

Noun

1. 1
   The quality of cohering, or being coherent; internal consistency.
2. 2
   The quality of forming a unified whole.
3. 3
   A logical arrangement of parts, as in writing.
4. 4
   The property of having the same wavelength and phase.
5. 5
   A semantic relationship between different parts of the same text.