Restriction is a type of Rule. Rule is related to Requirement. Requirement is a synonym of Necessity. 
Clothes is related to Costume. Costume is a synonym of Outfit. Outfit is a type of Unit. Unit is related to Area. 
Restriction --IsA--> Rule <--RelatedTo--> Requirement <--Synonym--> Necessity 
Clothes <--RelatedTo--> Costume <--Synonym--> Outfit --IsA--> Unit <--RelatedTo--> Area 