Frontier is a type of Wilderness. Frontier is a type of Boundary. Boundary is a synonym of Circuit. 
Temporary is related to Permanent. Permanent is related to Long. Long is related to Pole. 
Wilderness <--IsA-- Frontier --IsA--> Boundary <--Synonym--> Circuit 
Temporary <--RelatedTo--> Permanent <--RelatedTo--> Long <--RelatedTo--> Pole 