disparate vs uncompatible

disparate

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 

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

uncompatible

adj
  • Incompatible. 

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