Disagreement
Part of speech: noun
Definition: An argument or debate. A condition of not agreeing or concurring.
Example sentence: There's so much disagreement about investing, and it's because nobody really knows.
Divergence
Part of speech: noun
Definition: The degree to which two or more things diverge.the operator which maps a function F=(F1, ... Fn) from a n-dimensional vector space to itself to the number \sum_{i=1}^n \frac{\partial F_i}{\partial x_i}
Example sentence: There is an inevitable divergence between the world as it is and the world as men perceive it.