Error is related to Drop. Drop is the opposite of Lift. Lift is a synonym of Rear. Rear is related to Demand. 
Housing is a synonym of Case. Case is related to Legal. Legal is related to Plea. 
Error <--RelatedTo--> Drop <--Antonym--> Lift <--Synonym--> Rear <--RelatedTo--> Demand 
Housing <--Synonym--> Case <--RelatedTo--> Legal <--RelatedTo--> Plea 