Division is related to Long. Long is the opposite of Instant. 
Counterpart is a synonym of Twin. Twin is related to Swim. Sound is etymologically related to Swim. Sound is related to Product. 
Division <--RelatedTo--> Long <--Antonym--> Instant 
Counterpart <--Synonym--> Twin <--RelatedTo--> Swim <--EtymologicallyRelatedTo-- Sound <--RelatedTo--> Product 