incommensurable vs singular

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. 

singular

adj
  • Having the property that the matrix of coefficients of the new variables has a determinant equal to zero. 

  • Being the only one of the kind; unique. 

  • Referring to only one thing or person. 

  • Distinguished by superiority: peerless, unmatched, eminent, exceptional, extraordinary. 

  • Out of the ordinary; curious. 

  • Each; individual. 

  • Being only one of a larger population. 

  • Not equal to its own cofinality. 

  • Having no inverse. 

noun
  • A form of a word that refers to only one person or thing. 

  • That which is not general; a specific determinate instance. 

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