Tension and Ten-son !!

I was and I am troubling with some of the very easy Definition.(Not jumble in words like tension and ten-son !!)When it is the time of Description I Can manage but when it's question to be particular to words I am so confused, I think at my age it's happened with all. so I share here some of the definitions.

• Quantity: How much there is or how many there are of something that you can 
• Elongation: An addition to the length of something.
• Deformation: Alternation in the shape or dimensions of an object as a result of the application stress to it.

• Stress: Force that produces strain on a physical body.
• Strain: Deformation of a physical body under the action of applied forces.
• Shrinkage: Process, or result of becoming less or smaller
• Creep: A slow longitudinal movement or deformation 
• Inelastic: Not able to adjust readily to different conditions.
• Tension: A stress that produces an elongation of an Elastic physic body.
• Shear:The Influence that Produces a change in a Physical Quantity.
• Force: The influence that produce a change in a physical quantity

• Creep in concrete: progressive increase in the inelastic deformation of concrete under sustained stress component.
• Shrinkage in concrete: Contraction of concrete on drying.
• Creep co-officiant: The ratio of the total creep strain to elastic strain in concrete.
• Cracking load: The load on the structural elements corresponding to the first visible crack.