elasticity vs variability

elasticity

noun
  • The sensitivity of changes in a quantity with respect to changes in another quantity. 

  • A measure of the flexibility of a data store's data model and clustering capabilities. 

  • The ratio of the relative change in a function's output with respect to the relative change in its input, for infinitesimal changes at a certain point. 

  • The property by virtue of which a material deformed under load can regain its original dimensions when unloaded 

  • A system's ability to adapt to changes in workload by automatically provisioning and de-provisioning resources. 

  • Adaptability. 

  • The quality of being elastic. 

variability

noun
  • The state or characteristic of being variable. 

  • The degree to which a thing is variable. In data or statistics this is often a measurement of distance from the mean or a description of data range. 

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