Housing is a synonym of Cover. Bread is a type of Cover. 
Routine is a type of Procedure. Routine is related to Day. Day is related to Cake. Cake is related to Top. 
Housing <--Synonym--> Cover <--IsA-- Bread 
Procedure <--IsA-- Routine <--RelatedTo--> Day <--RelatedTo--> Cake <--RelatedTo--> Top 