Thought is a synonym of Head. Head is related to Department. Department is related to Shopping. Shopping can cause/lead to Bankruptcy. 
Letter is related to Love. Love is related to Red. Red is related to Ball. Ball is related to Cloud. 
Thought <--Synonym--> Head <--RelatedTo--> Department <--RelatedTo--> Shopping --Causes--> Bankruptcy 
Letter <--RelatedTo--> Love <--RelatedTo--> Red <--RelatedTo--> Ball <--RelatedTo--> Cloud 