Question

definition for basic Etiquette

Answer 1

The word "etiquette" comes from the French word "estique," meaning to attach or stick. The noun "etiquette" describes the requirements of behaviors according to conventions of society. It includes the proper conduct that is established by a community for various occasions, including ceremonies, court, formal events and everyday life.
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Answer 2

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Etiquette is a code of polite conduct. If you practice proper etiquette, you are less likely to offend or annoy people and you may even charm them.

Examples:

Now-a-days, young people in relationships, break the social etiquette.

A RAW agent must abide by the etiquette of the organisation.