General is a type of Head. Head is the opposite of Tip. Tip is a synonym of Lean. 
Trigger is a type of Device. Device is a synonym of Design. Design is related to Fix. Fix is related to Mechanic. 
General --IsA--> Head <--Antonym--> Tip <--Synonym--> Lean 
Trigger --IsA--> Device <--Synonym--> Design <--RelatedTo--> Fix <--RelatedTo--> Mechanic 