imaginary vs nonreal

imaginary

noun
  • An imaginary quantity. 

  • The set of values, institutions, laws, and symbols common to a particular social group and the corresponding society through which people imagine their social whole. 

  • Imagination; fancy. 

adj
  • Existing only in the imagination. 

  • Having no real part; that part of a complex number which is a multiple of √ (called imaginary unit). 

nonreal

noun
  • A nonreal number. 

adj
  • Not real; unreal, imaginary. 

  • Not real; not of the real numbers. 

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