Assign is related to Appoint. Appoint is a type of Equip. Equip is etymologically related to Ship. 
Shock is related to Victim. Butt is a type of Victim. Butt is a synonym of Ass. 
Assign <--RelatedTo--> Appoint --IsA--> Equip --EtymologicallyRelatedTo--> Ship 
Shock <--RelatedTo--> Victim <--IsA-- Butt <--Synonym--> Ass 