dif. in s10 pickup/blazer

other than the obvious whats the difference in the s10 pickup and s10 blazer? im not real big on cars, i like working on them but if it doesnt pertain to me i usually dont bother. anyways i was just wondering.

I dont know much about these "trucks" but my guess would be nothing besides body.  And of course the S10 pickups got the 4 cyl.  

Basically  from the B pillars back minus tailgate/lights its different.

The first gen S-Series Blazers also got the 4 banger