What is the similar and what is the different between the meanings of the terms biomechanics, human movement biomechanics and kinesiology?

Kinesiology is the scientific study of human movement which Involves the study of skeletal framework, the structure of muscles and their functions, the action of the joints, and the neuromuscular basis of movement.

Biomechanics focuses on the application of the scientific principles mechanics to understand movements and actions of human bodies and sport implement (e.g. a tennis racquet). It is intricately related to Kinesiology.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

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