Outer is the opposite of Inner. Inner is related to Hall. Hallway is a type of Hall. Hallway is related to Aisle. 
Corner is the opposite of Edge. Edge is related to Margin. 
Outer <--Antonym--> Inner <--RelatedTo--> Hall <--IsA-- Hallway <--RelatedTo--> Aisle 
Corner <--Antonym--> Edge <--RelatedTo--> Margin 