- Constant change - Degree of change - Difference - Differential - Forming a trio, Ivan made a difference - The act of varying; a partial change in the form,
position, state, or qualities of a thing; modification; alternation;
mutation; diversity; deviation; as, a variation of color in different
lights; a variation in size; variation of language. - Extent to which a thing varies; amount of departure from
a position or state; amount or rate of change.