Decade is a different concept from Century. Century is related to Length. 
Window is a type of Framework. Rack is a type of Framework. Rack is a type of Try. Try is a synonym of Render. 
Decade <--DistinctFrom--> Century <--RelatedTo--> Length 
Window --IsA--> Framework <--IsA-- Rack --IsA--> Try <--Synonym--> Render 