Arun15 you seem to have definitions wrong. I guess I'll deep dive a bit.
Transgender
"Transgender" is just an umbrella term that collectively puts together everyone who does not relate to their gender assigned at birth, as well as people who are questioning their identity.
Cisgender
"Cisgender" is used to describe people whose gender identity matches the gender they were assigned at birth based on their biological sex.
Trans-Binary
Trans-binary describes people who are transgender people but identify exclusively within the male/female binary.
Genderqueer / Gender Non-Conforming
This itself is another umbrella term within the Transgender umbrella term and relates to people whose gender identity does not correspond to conventional binary gender distinctions. Some could be both (bi-gender), some neither (non-binary), some shifting between the two (genderfluid), and some are just queer or gender non-conforming, identifying with certain aspects of a certain gender and don't fit the binary norms — the vast majority of people who are not trans-binary fall under these classifications. The third gender, most of the backward religious-based guru communities, people identifying exclusively as "Transgender" or "queer," questioning crossdressers, all fall somewhere here.
That's not to say there can't be trans-binary people within these backward communities, just that most think of themselves as the third gender based on religious points as they may lack the resources and education. While researching the topic, after falling out with a friend, I found that many trans-binary people were abandoned by their parents at a young age because of misconceptions of the transgender community as a whole, and these youngsters ended up in these backward communities so they could belong somewhere and survive.
I am a bit resentful of these so-called gurus for perpetuating the bad image people have of the whole transgender community, but it could be a lack of education, or they may be set in their ways. Regardless, my heart goes out to people who have been abandoned and had no choice but to be part of such a community. It's quite sad. So, while knowing their struggles is good, most of our challenges would be vastly different.
It's inappropriate for a psychiatrist to liken our experience to backward communities as our lives are different. It could be coming from a lack of education on their part or prejudice. I would switch to another psychiatrist if they insist on it.
Transsexual
This is probably the most confusing label, and I'm starting to get why @Arun15 kept bringing up "sexuality" in the other discussion and now brought up transexual in the wrong context. Let me be absolutely clear: while undergoing surgery will be beneficial for a heterosexual relationship, it has nothing to do with a person's sexuality. I'm on the asexual spectrum, and I still plan to get surgery because of my dysphoria and not what I can do sexually.
A transexual person is a transgender person (usually a trans-binary person) who plans to or has undergone medical and/or surgical transition to align with their gender identity. It's as simple as that. Why "usually trans-binary?" Well, other transgender people have been known to go on hormones and even get surgeries. It could be to help with dysphoria or purely for euphoria but may not fully relate to the male/female binary genders.
I hope it clears up the labels somewhat.