gender-free vs omnigender

gender-free

adj
  • Agender, being neither male nor female nor any third gender; free of gender. 

  • Acceptable for or available to any gender. 

  • Which does not define people in the basis of gender; in which gender is irrelevant to people's lives and choices. 

omnigender

adj
  • Treating all genders as one or the same, not discriminating or distinguishing between them; unisex. 

  • Identifying with all genders. 

How often have the words gender-free and omnigender occurred in a corpus of books? (source: Google Ngram Viewer )