Using maximal effort to produce force against resistance to improve overall strength. Expect heavy weights, low reps, and slower movements.
Giving your muscles more size, aka tone or definition. Expect moderate weights, moderate reps, and prolonged muscle tension.
The ability to persist in physical activity or to resist fatigue. Improving muscular endurance will help reduce the risk of injury and lead to an increased resilience to exercise fatigue. Expect lighter weights, higher reps, and prolonged movements.
Using maximal speed against resistance for improved athletic performance. Expect light weights, explosive, high velocity movements, and low reps.