Fisherman is related to Boat. Boat is related to Travel. Travel is related to Distance. 
Injure is a type of Hurt. Injure is etymologically related to Injury. 
Fisherman <--RelatedTo--> Boat <--RelatedTo--> Travel <--RelatedTo--> Distance 
Hurt <--IsA-- Injure --EtymologicallyRelatedTo--> Injury 