Cách sử dụng
Gratuity is a term used when someone wants to give an extra amount of money as a thank you to someone for their services. This is often done when a person receives good service in a restaurant or to show appreciation to a hairdresser, hotel staff, or other service industry workers. It's not always mandatory to give a gratuity, but it's a nice way to show gratitude and appreciation for the help or service provided.