imaginary vs phantasmagoric

imaginary

adj
  • Existing only in the imagination. 

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

noun
  • 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. 

  • An imaginary quantity. 

phantasmagoric

adj
  • Characterized by or pertaining to a dreamlike blurring of real and imaginary elements. 

  • Characterized by or pertaining to rapid changes in light intensity and colour. 

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