What are components of health realted fitness and explain what each of them mean'?

They are heart and lung endurance or cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition.
Muscular Strength is the amount of force you can put forth with your muscles. It is often measured by how much weight you can lift.
Flexibility is the ability to use your joints fully.
Heart and lung endurance or cardiovascular endurance is the ability to exercise the entire body for long periods of time. 
Body Composition is the percentage of body weight that is fat compared to other body tissue, such as bone and muscle.
Muscular Endurance is the ability to use the muscles, which are attached to the bones, many times without getting tired.