Gender is one’s perception of oneself. Sex is, in this case, anatomical genitals. Usually people have the same gender as their assigned sex, but when that isn’t the case, they are somewhere under the transgender umbrella (the T in LGBT).
Gender dysphoria: Gender dysphoria is a condition in which a person feels that there is a mismatch between their biological sex and their gender identity. This mismatch can cause feelings of discomfort that are called gender dysphoria. Gender dysphoria is a recognized condition, for which treatment is sometimes appropriate. It is not a mental illness. The condition is also sometimes known as gender identity disorder, gender incongruence or transgenderism.
Some people with gender dysphoria have a strong and persistent desire to live according to their gender identity, rather than their biological sex. These people are sometimes called transsexual people, or trans people. Some trans people undergo treatment so that their physical appearance is more consistent with their gender identity.
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Genderfluid: A gender identity that is a mix of two or more genders, that change over time. For example, some days a genderfluid person might feel more like a female, while other days more agender, male, bigender etc.
Cis: cisgender, the opposite of transgender. A person whose sex is the same as their gender. Often used together with male/female (cismale, cisfemale).
Bigender: Identifies with two genders.
Pangender: Identifies as ALL OF THE GENDERS.
Agender: Identifies with no gender.
Polygender: Identifies with multiple but not all genders.
Cross-Dress(ing): Cross-Dressing is when someone of one gender wears clothing of another gender (eg: a man wearing clothes designed for women, or vice versa).
(In the) Closet: Keeping your gender identity a secret.
Coming out (of the closet): Disclosing your gender identity.
DRAG Queen/King: A person who presents stereotypical and larger-than-life images of the opposite gender for entertainment. The term Drag is reputed to originated from DRAAG – Dressed as a Girl, but that is disputed. DRAG is a highly stylised form of cross-dressing. Some trans people in the entertainment business do DRAG. A DRAG queen is a male who dresses as a very feminized woman and vice versa for a DRAG king. **Usually, they do not identify as the gender they are presenting as.
FTM– Female to Male: Describes someone who presents or plans to present a male gender but was assigned a female gender at birth.
Gender: Gender is the social concept put in place to define masculinity and femininity. Not everyone, however, fits within the gender binary of male and female.
Gender Identity: An inner sense of self that defines the gender in which a person identifies with, and it may
or may not align with the gender assigned at birth on the basis of genitalia.
Gender-Queer: Coined by Riki Wilkins to describe anyone who transgresses the boundaries of the gender binary.
Gender Role: Another social invention fueled by gender stereotypes. An example is that women work in the kitchen and men work in the garage. In some places of the world, nobody bats an eye if a woman wears pants, but she risks being killed or worse in other places if she so much bares her ankles.
GIC – Gender Identity Clinic: A place one can go to for help based on their gender identity. One example is the GIC of CAMH, in Toronto (with transphobic specialists)
GRS/SRS: Genital/Sex Reconstructive Surgery. Also referred to as “bottom surgery.” This is the surgery that magically changes female genitals into male genitals or vice versa.
Outed: To have one’s gender identity or sexual orientation publicised to the world by someone else or the media. Within the LGBT community outing someone is considered to be totally unacceptable behaviour. An example is my mother saying “Oh, sorry she’s going in the men’s room, she’s transgender.” Gosh darn it, mom.
Pass(ing): To present as the gender one identifies with, and someone who sees them acknowledging as said gender. The first time someone passes is often something to be celebrated over.
Real Life Experience (Test) (RLE): The requirement under the Harry Benjamin Standards of Care that a candidate for genital reconstruction surgery should demonstrate their ability to live in the gender opposite to their birth gender for at least a year.
Shemale: A derogative term created by the pornography business to describe a transwoman with breasts and everything feminine, but chooses to keep her male genitals.
Stealth: Having transitioned, living in an acquired gender without disclosing one’s past gender identity. (Living in Stealth).
Trans: The preferred umbrella term used to describe anyone whose gender identity does not fit with society’s fixed binary view of natal gender.
Trans Community: The big ol’ group of transpeople. We’re awesome and some of us even give out FREE HUGS!
Transvestite/TV: Similar to “shemale.” Some find it offensive, some don’t, but it’s best to be on the safe side and just use transgender.
Transgender: An umbrella term for people who do not identify with their assigned gender.
Transwoman/transgirl: A woman who was assigned male at birth but identifies as female.
Transman/transguy: Same as above but vice-versa.
Transsexual – Pre-operative: Someone who does not identify as their assigned sex and has not had surgery to correct this.
Transsexual – Post-operative: Someone who has had surgery to match their sex with their gender.
...am heterosexual, best friend of almost 40 years is gay and have a daughter that has had both girlfriends and boyfriends. In my book it does not matter what a person's sexual preference is - that is their business...what matters to me is how I am treated by other people. 
