What is a difference or lack of agreement referred to as?

A difference or lack of agreement is referred to as a discrepancy. This term is commonly used to indicate a variance or disagreement between two or more pieces of information, points of view, or sets of data. In various contexts, such as law enforcement or investigative work, identifying discrepancies is critical, as they may point to areas that require further investigation or clarification.

Deference relates to yielding to the opinions or decisions of others and does not convey the idea of disagreement. Designation refers to the act of naming or identifying something, while declaration involves formally stating or announcing something. None of these terms encapsulate the notion of a difference or lack of agreement, making "discrepancy" the most accurate choice in this context.