Heel is part of Boot. Heel is a synonym of Dog. Dog is related to Wash. Wash is related to Bathroom. 
Window is a type of Framework. Rack is a type of Framework. Rack is related to Rib. 
Boot <--PartOf-- Heel <--Synonym--> Dog <--RelatedTo--> Wash <--RelatedTo--> Bathroom 
Window --IsA--> Framework <--IsA-- Rack <--RelatedTo--> Rib 