Difference between Rigidness and Inflexibility

What is the difference between Rigidness and Inflexibility?

Rigidness as a noun is the characteristic of being rigid. while Inflexibility as a noun is the quality or state of being inflexible, or not capable of being bent or changed; unyielding stiffness; inflexibleness; rigidity; obstinacy.

We hope you now know whether to use Rigidness or Inflexibility in your sentence.