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: I don't believe we're seeing the beginning of a divergence. We have seen a partial divergence on this case.
Deviation
Part of speech: noun
Definition: The act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty.The state or result of having deviated; a transgression; an act of sin; an error; an offense.The voluntary and unnecessary departure of a ship from, or delay in, the regular and usual course of the specific voyage insured, thus releasing the underwriters from their responsibility.The shortest distance between the center of the target and the point where a projectile hits or bursts.For interval variables and ratio variables, a measure of difference between the observed value and the mean.
Example sentence: The investigations also proved that there were many cases of spontaneous deviation, i.e. cases where there had been no stimulation of the semi-circular canal apparatus.