varying

(verb): To change with time or a similar parameter.
(verb): To institute a change in, from a current state; to modify.
(verb): Not to remain constant: to change with time or a similar parameter.
(verb): (of the members of a group) To display differences.
(verb): To be or act different from the usual.
(verb): To make of different kinds; to make different from one another; to diversity; to variegate.
(verb): To embellish; to change fancifully; to present under new aspects, as of form, key, measure, etc. See variation.
(verb): To disagree; to be at variance or in dissension.
(noun): A kind of variable, used by a fragment shader, that interpolates values across a primitive, so as to produce gradient effects etc.

He varies his magic tricks so as to minimize the possibility that any given audience member will see the same trick twice.
You should vary your diet. Eating just bread will do you harm in the end.
His mood varies by the hour.
The sprouting tendency of potatoes varies between cultivars, years and places of growing.