Cake can be used for Eating. Cake is related to Dangerous. Pistol can be Dangerous. Pistol is a different concept from Rifle. 
you are likely to find Machine in/at/on Street. you are likely to find Store in/at/on Street. you are likely to find Stuff in/at/on Store. Stuff is related to Matter. 
Eating <--UsedFor-- Cake <--RelatedTo--> Dangerous <--HasProperty-- Pistol <--DistinctFrom--> Rifle 
Machine --AtLocation--> Street <--AtLocation-- Store <--AtLocation-- Stuff <--RelatedTo--> Matter 