Push is a type of Travel. Push is related to Force. Force is related to Lift. Lift is related to Vertical. 
Mild is related to Shock. Shock is related to Factor. Factor is related to Component. 
Travel <--IsA-- Push <--RelatedTo--> Force <--RelatedTo--> Lift <--RelatedTo--> Vertical 
Mild <--RelatedTo--> Shock <--RelatedTo--> Factor <--RelatedTo--> Component 