Overdrives are SS clipping meant to simulate an overdriven tube amp. distortion is harsher driving.

Quote by SuperSamuraiGuy
Thanks for answering all my question ssguitar

overdrive doesnt have as much gain right?
Quote by rockybo
I'm making an igloo in my backyard later and smoking a bong in it.

Then listen to clips of the Boss SD-1 compared to the DS-1. You'll find that the SD-1 has a more natural sound, similar to that of a valve amp being driven (this is overdrive). The DS-1 is heavier and less natural sounding. This is distortion.

There have been a lot of threads like this, so using the search bar might be a good bet, since my head hurts too much to explain
in lahmens terms, distortion and overdrive are the same thing. Only overdrive is 'softer' than distortion
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Everton FC
overdrive is where a signal from the guitar overdrives the amp and gives you that crunchy sound. i dunno exactly what distortion is...i guess its just very heavy overdrive...or mebe its artificial overdrive...i dunno... try wikipedia
Quote by Wikipedia
Overdrive is a term used to describe the sound of an amplifier running at high volume, usually deliberately, to the point where distortion (clipping) is clearly audible in the output signal.