Zone is a synonym of Belt. Belt is a synonym of Book. Book is related to Introduction. 
Average is a synonym of Random. Random is the opposite of Music. Music is related to Record. Record is related to Hardware. 
Zone <--Synonym--> Belt <--Synonym--> Book <--RelatedTo--> Introduction 
Average <--Synonym--> Random <--Antonym--> Music <--RelatedTo--> Record <--RelatedTo--> Hardware 