stiffness

As nouns the difference between stiffness and flexibility

is that stiffness is rigidity or a measure of rigidity while flexibility is the quality of being flexible; suppleness; pliability.

As nouns the difference between stiffness and resilience

is that stiffness is rigidity or a measure of rigidity while resilience is the mental ability to recover quickly from depression, illness or misfortune.

As nouns the difference between stiffness and elasticity

is that stiffness is rigidity or a measure of rigidity while elasticity is the property by virtue of which a material deformed under the load can regain its original dimensions when unloaded.

As nouns the difference between formality and stiffness

is that formality is the state of being formal while stiffness is rigidity or a measure of rigidity.

Stiffness is a related term of exactness.

As nouns the difference between stiffness and exactness

is that stiffness is rigidity or a measure of rigidity while exactness is the state of being exact.

As nouns the difference between tough and stiffness

is that tough is a person who obtains things by force; a thug or bully while stiffness is rigidity or a measure of rigidity.

As an adjective tough

is strong and resilient; sturdy.

As an interjection tough

is (slang) (used to indicate lack of sympathy).

As a verb tough

is to endure.

As nouns the difference between stiffness and stretch

is that stiffness is rigidity or a measure of rigidity while stretch is an act of stretching.

As a verb stretch is

to lengthen by pulling.

As nouns the difference between stiffness and elongation

is that stiffness is rigidity or a measure of rigidity while elongation is the act of lengthening, or the state of being lengthened; protraction; extension.

As nouns the difference between stiffness and tension

is that stiffness is rigidity or a measure of rigidity while tension is condition of being held in a state between two or more forces, which are acting in opposition to each other.

As a verb tension is

to place an object in tension, to pull or place strain on.

As nouns the difference between stiffness and contracture

is that stiffness is rigidity or a measure of rigidity while contracture is an abnormal, sometimes permanent, contraction of a muscle; a deformity so caused.