Compound exercises involve the use of more than one muscle group through different joints in order to perform the exercise movement. Isolation exercises effectively isolate the working muscle and only involve movement though one joint.
Compound chest exercises to increase bulk include the bench press (and variations of), pushups, and dips. While Isolation exercises include flyes, pec dec, cable crossover and dumbbell pullover.
Here is one of my original chest building routines designed to attack the Pec muscle from 3 different angles. It also provides toning and effectively works the other supporting muscles mentioned above. All exercises should be performed using medium-heavy weights and the target number of reps for each set are listed in brackets:
