Control is a synonym of Power. Power is related to Soap. Soap is related to Drama. Tragedy is a type of Drama. 
Shower is related to Place. Place is related to Nature. 
Control <--Synonym--> Power <--RelatedTo--> Soap <--RelatedTo--> Drama <--IsA-- Tragedy 
Shower <--RelatedTo--> Place <--RelatedTo--> Nature 