Restriction (noun)

1. A rule or measure that limits or bans something.
2. A restriction or limitation on something.
3. A condition or constraint that limits freedom of action or choice.

Origin:

Late middle english: from old french, or from latin restrictio(n-), from restringere "bind back" (see restrict).

Examples:

1. The restriction on smoking in public places.
2. The new restriction on travel because of the pandemic.
3. The restriction on the use of plastic bags.
4. The company has a restriction on overtime.
5. The restriction on the number of people in the building.