Restriction is a synonym of Limitation. Freeze is a type of Limitation. Freeze is related to Process. Process is related to Legislation. 
Memory is related to Computer. Computer can be Ugly. Ugly is a different concept from Handsome. 
Restriction <--Synonym--> Limitation <--IsA-- Freeze <--RelatedTo--> Process <--RelatedTo--> Legislation 
Memory <--RelatedTo--> Computer --HasProperty--> Ugly <--DistinctFrom--> Handsome 