Rack is a synonym of Neck. Neck is related to Bite. Bite is related to Dog. Dog is related to Loyalty. 
Marine is related to Boat. Boat is related to Wet. Wet is related to Sea. Sea is related to Dock. 
Rack <--Synonym--> Neck <--RelatedTo--> Bite <--RelatedTo--> Dog <--RelatedTo--> Loyalty 
Marine <--RelatedTo--> Boat <--RelatedTo--> Wet <--RelatedTo--> Sea <--RelatedTo--> Dock 