incommensurable vs inexact

incommensurable

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

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

  • having no common integer divisor except 1. 

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

inexact

adj
  • Imperfectly conforming; exceeding or falling short in some respect. 

  • having a path-dependent integral 

  • Imprecisely or indefinitely conceived or stated. 

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