Shock is a type of Pile. Pile is a type of Put. Install is a type of Put. Install is a synonym of Initiate. 
Stroke is a synonym of Beat. Beat is related to Background. Background is a type of Stress. 
Shock --IsA--> Pile --IsA--> Put <--IsA-- Install <--Synonym--> Initiate 
Stroke <--Synonym--> Beat <--RelatedTo--> Background --IsA--> Stress 