different vs incommensurable

different

adj
  • Distinct, separate; used for emphasis after numbers and other determiners of quantity. 

  • Not the same; exhibiting a difference. 

  • Various, assorted, diverse. 

  • Unlike most others; unusual. 

noun
  • The different ideal. 

adv
  • Differently. 

incommensurable

adj
  • having a ratio that is not expressible as a fraction of two integers. 

  • Not able to be measured by the same standards as another term in the context. 

  • having no common integer divisor except 1. 

noun
  • An incommensurable value or quantity; an irrational number. 

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