Difference between Unyieldingness and Obduracy

What is the difference between Unyieldingness and Obduracy?

Unyieldingness as a noun is the state or condition of being unyielding. while Obduracy as a noun is the state of being obdurate, intractable, or stubbornly inflexible.

We hope you now know whether to use Unyieldingness or Obduracy in your sentence.