plasticity

noun2

1. •
   The quality or state of being plastic.

   • In place of a stinger, a male bee or wasp has hardened genitalia […] used for grasping the female during mating and transferring sperm. Male genitalia are a showcase of structural plasticity. — 2016
2. •
   The property of a solid body whereby it undergoes a permanent change in shape or size when subjected to a stress exceeding a particular value (the yield value).