"Non-Binary"
(adj.) refers to any gender that is not exclusively male or female.
"Gender" (noun) is an inherent part of a person's psychological identity. An individual's mental, emotional, social, and/or spiritual relationship to masculinity, femininity, androgyny, neutrality, and other genders.
"They" Pronouns
"They/Them/Their/Themself" as a singular gender-neutral pronoun:
Miraloma Elementary, a school of about 365 students, made the move to affirm several students who don’t fit traditional gender norms. Bathrooms used by kindergarteners and first-graders will be converted to gender-neutral spaces. The plan is to phase out gender-divided bathrooms as the first grade class advances every year. One parent of a gender non-conforming first grader perfectly explained why this was all worth it.