Just need to Clarify things out. HELP!

[9&3/4inches]

Yes am soo much into shemales ,ladyboy,tranny.. sorry is some of you might be offended by this but first of all are there any difference ? between a shemale,transgender,laldyboy ?
and and please tell me ? which are the males that has undergone alot of you know what to change themselves into females
and which were actually the girls that were born with both sex but decided to keep the cock instead of the pussy <-- because thats really what am into, a true girl with a cock.

here is a picture of a ladyboy that i took from broka's thread and i assume its a ladyboy .
take a look and tell me ? was that she a he that has changed himself to become a female or their just called lady with boy added to it just because of their cock ?. help out guys am an ignorants when it comes to this. thanks

and please tell me the differences between them , shemales,ladyboy etc etc...