Terrain is related to Hill. Hill is related to Boot. Boot is a type of Remove. Remove is a synonym of Export. 
West is similar to Western. Western is a type of Station. Bay is a type of Station. 
Terrain <--RelatedTo--> Hill <--RelatedTo--> Boot --IsA--> Remove <--Synonym--> Export 
West <--SimilarTo--> Western --IsA--> Station <--IsA-- Bay 