What norms do we use for routine or casual interactions

The norms we use for routine or casual interaction are called Folkways

Explanation:

Folkways are the customs and social norms of everyday life. They are considered  as the "right way" to do things in society.

They can be a list of behaviours that are expected from society. Such as:

standing in line, holding the door for someone, nodding at or greeting fellow passengers at a bus stop,  saying please and thank you.

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