Nonbinary is identifying as neither boy/man or girl/woman. It can be a feeling that you are something in between boy and girl or a feeling that you are something else entirely. Nonbinary can be its own gender option or used as an umbrella term for other identities outside of the boy/girl option.
I got a take that idk is spicy or not; I identify as agender now, I think, still questioning. As an agender person, I don’t think that makes me trans in the same way it would make an Enby individual trans. Because trans implies I changed genders, and I don’t want a gender.