A program that diffs, a diff.
Not to have the same traits or characteristics; to be unalike or distinct.
To have diverging opinions, disagree.
To be separated in quantity.
To hide or conceal.
To make an action as if doing one thing, but actually doing another, for example to trick an opponent; to feint.
To make a false show or pretence of; to counterfeit or simulate.
To imagine; to invent; to pretend to do something.