derivate vs disparate

derivate

noun
  • Something derived; a derivative. 

adj
  • Derived; derivative. 

disparate

noun
  • Any of a group of unequal or dissimilar things. 

adj
  • Utterly unlike; incapable of being compared; having no common ground. 

  • Composed of inherently different or distinct elements; incongruous. 

  • Essentially different; of different species, unlike but not opposed in pairs 

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