nonreal vs spurious

nonreal

adj

  • Not real; unreal, imaginary. 

  • Not real; not of the real numbers. 

noun

  • A nonreal number. 

spurious

adj

  • False, not authentic, not genuine. 

  • Extraneous; stray; not relevant or wanted. 

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