What is the different between shemale, lady-boy, and transgender

This might not in the right catagory, please forgive me. I just want to have more perspective from the different people. And I choose to use english because it's more direct and not too much emotiona

I saw many of them in Siam Centre and Siam Paragon, please do explain to me why is that and what is the cause of this. Thank you for your answer.

Please feel free to ignore, this is a message to myself in the future but if you want to read on please feel free to. For the last 2y7m I’ve learnt how to love someone and what it feels like to

on February 26-28, 1997, at the Manila Statement by His Excellency Mr. Sukavich Rangsitpol Minister of Education of Thailand Your Excellencies,  Ladies and Gentlemen, First of all I would li