A greeting can consist of an exchange of formal expression. The greeting of each country is different , such as Thai greeting referred to as the wai consists of a slight bow, with the palms pressed together.The British often do no more than say “hello” when they see friends. Even adults usually shake hands only when they meet for the first time. French People, including school-children, shake hands with their
friends, or kiss them on both cheeks, each time they meet and
they leave.