Bow is part of Ship. Bow is the opposite of Arrow. Arrow is related to Flying. 
Son is related to Father. Grandfather is derived from Father. Grandfather is related to Man. Man is related to Fisherman. 
Ship <--PartOf-- Bow <--Antonym--> Arrow <--RelatedTo--> Flying 
Son <--RelatedTo--> Father <--DerivedFrom-- Grandfather <--RelatedTo--> Man <--RelatedTo--> Fisherman 