The difference between Mobility and Tenacity

Mobility as a noun:

The ability to move; capacity for movement.

Mobility as a noun (now, chiefly, literary):

A tendency to sudden change; mutability, changeableness.

Mobility as a noun (military):

The ability of a military unit to move or be transported to a new position.

Mobility as a noun (chiefly, physics):

The degree to which particles of a liquid or gas are in movement.

Mobility as a noun (chiefly, sociology):

People's ability to move between different social levels or professional occupations.

Tenacity as a noun:

The quality or state of being tenacious, or persistence of purpose; tenaciousness.

Tenacity as a noun:

The quality of bodies which keeps them from parting without considerable force, as distinguished from brittleness, fragility, mobility, etc.

Tenacity as a noun:

The effect of this attraction, cohesiveness.

Tenacity as a noun:

The quality of bodies which makes them adhere to other bodies; adhesiveness, viscosity.

Tenacity as a noun (physics):

The greatest longitudinal stress a substance can bear without tearing asunder, usually expressed with reference to a unit area of the cross section of the substance, as the number of pounds per square inch, or kilograms per square centimeter, necessary to produce rupture.