Norm (noun)

1. A standard or pattern regarded as typical.
2. A principle or value that is widely accepted and used as a basis for judgment.

Origin:

Mid 19th century: from french norme, from latin norma "carpenter's square", later "rule, pattern".

Examples:

1. The norm in this society is to shake hands when meeting someone.
2. The norm of gender equality is widely accepted today.
3. The norm of punctuality is very strict in this company.
4. The norm of free speech is an important aspect of democracy.
5. The norm of human rights is recognized worldwide.