Sexuality
Transgender and nonbinary people identify with a wide variety of sexualities. Just because you know someone's gender does not mean you automatically know their sexual orientation.
“Passing”
“Passing” is a term used to describe whether or not a person is perceived as a certain gender; for example, “passing as a woman” or “passing as a man.” For many transgender people, being able to “pass” as the gender they align with is important for a sense of well-being, and “passing privilege” can allow one to move safely through environments where being perceived as transgender is a danger.
However, the term can be considered problematic because it implies that being perceived as cisgender is the ultimate goal for transgender and nonbinary people. The word “passing” can imply that a view web site person has to “convince” others of their gender, rather than being able to simply express their true self. Implying that transgender people are lying, tricking, or deceiving other people is wrong and hurtful.
Misgendering
To misgender someone means to use the wrong name, pronouns, or form of address for a person's gender.