coherence

This term describes a state of seamless integration, whether in a logical argument, a social group, or a physical wave. It suggests a lack of contradiction and a smooth flow that allows a complex system to be perceived as a single, unified entity. In linguistic and logical contexts, it refers to the internal consistency of a narrative or theory. In physics, specifically regarding light or sound, it describes the precise alignment of waves. Because it describes an abstract quality or state, it is treated as an uncountable noun and does not typically take a plural form.