Terrain is related to Landscape. Landscape is related to Orientation. Sign can be used for Orientation. 
Cruise is a type of Travel. Travel is related to Tourist. Tourist is related to Foreign. Foreign is related to Colony. 
Terrain <--RelatedTo--> Landscape <--RelatedTo--> Orientation <--UsedFor-- Sign 
Cruise --IsA--> Travel <--RelatedTo--> Tourist <--RelatedTo--> Foreign <--RelatedTo--> Colony 