However, here are some options depending on the context:
Formal:
* Code: This is the most common and formal choice, particularly for a set of written rules. For example, "The building's code of conduct".
* Regulations: This implies a strict and official set of rules. For example, "The government regulations on immigration".
* Statutes: This refers to written laws or rules. For example, "The statutes of the organization".
Informal:
* Set: This is a simple and general option. For example, "A set of rules for playing the game".
* Body: This implies a collection of rules with a specific purpose. For example, "The body of rules governing the competition".
* Framework: This suggests a structured system of rules. For example, "The framework of rules for the school".
Ultimately, the best choice depends on the specific context and the tone you want to convey.