The Wai as a greeting and respect of tradition, phunoi and per adults the strict ceremony. Thailand people use first name and surname used as a dwelling, the word "you" before the name.
Begging is to greet and show respect for the tradition of the less mature and have a strict ritual. Thailand is not the first name, last name and the word "you" before the name.
Wai is a greeting and respect of the small per adult, according to tradition and ritual. People use first names is not a surname, and use the word "you" before the name.