plasticity vs workability

plasticity

noun
  • The quality or state of being plastic. 

  • 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) 

workability

noun
  • The quality of being workable; practical capacity to succeed. 

  • The ease with which something can be worked or fashioned. 

How often have the words plasticity and workability occurred in a corpus of books? (source: Google Ngram Viewer )