Warn is a type of Order. Warn is a type of Advise. Advise is a synonym of Counsel. 
Truck is related to Transport. Transport is related to Public. Public is related to Display. 
Order <--IsA-- Warn --IsA--> Advise <--Synonym--> Counsel 
Truck <--RelatedTo--> Transport <--RelatedTo--> Public <--RelatedTo--> Display 