An interesting question - actually, I think of a buzz bait bite as being more of an aggravation bite - this thing keeps comming into his territory until he get's mad enough to attack it.
The same may be said for pop-r and chug-bug bites, but usually these tend to represent more of an easy meal and therefore, I think of them as feeding bites (same with spooks).
A "reaction" bite to me is anytype of moving bait that suddenly appears in the fish's bite range and causes the fish to instintively strike out. This could be a crank bait, spinner bait, even a T-rigged worm or jig falling into the fish's bite range.
It will be interesting to see what others have to say.