The tag "nonbinary-trans" refers to a type of porn content that features performers who identify as nonbinary or transgender. Nonbinary is an umbrella term for gender identities that are not exclusively masculine or feminine - individuals may identify as genderqueer, agender, bigender, or another term altogether. Transgender is an umbrella term for people whose gender identity differs from the sex they were assigned at birth, which may include trans men, trans women, and nonbinary individuals. The tag represents a desire to showcase porn featuring performers with these identities, promoting representation and inclusivity in adult entertainment.