Sound is related to Speaker. Speaker is related to Equipment. Equipment is related to Case. Case is related to Carrier. 
Elaborate is related to Degree. Degree is related to Quality. Quality is related to Worth. 
Sound <--RelatedTo--> Speaker <--RelatedTo--> Equipment <--RelatedTo--> Case <--RelatedTo--> Carrier 
Elaborate <--RelatedTo--> Degree <--RelatedTo--> Quality <--RelatedTo--> Worth 