Terminology of exercise:

Muscle Imbalance:  Alteration of muscle length surrounding a joint
Muscular Endurance:  The ability of of the body to produce low levels of force and maintain them for an extended period of time.
Hypertrophy:  Increase in size of the muscle.
Atrophy:  Decrease in size of the muscle.
Agonist:  Muscles that are the primary movers in a joint motion.  (Prime Movers)
Synergist:  Muscles that assist prime movers
Antagonist:  Muscles that act in direct opposition of the prime movers.
Stabilizers:  Muscle that support the body while the prime movers and the synergist perform the movements patters.
Neutralizers:  Muscles that counteract the unwanted actions of other muscles.
Power:  The ability to exert maximal force in the shortest amount of time.
Strength:  The ability of the neuromuscular system to provide internal tension and exert force against external resistance.  (Recorded as 1 rep max)
Strength Endurance:  The ability of the body to repeatedly produce high levels of force for prolonged periods
Neural Adaptations:  An adaptation to strength training in which muscles are under the direct command of the nervous system.  (For your muscles to contract and keep contracting…they must receive a signal from your nervous system.  If a motor unit (a neuron and all the muscle fibers it innervates) stop firing, you will not be able to lift that weight.