For emphasizing difference or distinction:
* -ence: difference (noun) - a point or way in which things are not the same
* -ent: different (adjective) - not the same; unlike
* -entiate: differentiate (verb) - to distinguish, to make or become different
* -entiation: differentiation (noun) - the process of distinguishing or making different
For emphasizing change or variation:
* -ing: differing (verb) - changing, varying
* -ed: differed (verb) - changed, varied
Other suffixes:
* -able: differable (adjective) - capable of being different
* -ably: differably (adverb) - in a way that is different
The best suffix to use depends on the specific context and meaning you want to express.