Storage is related to Disc. Disc is a synonym of Album. Chronic is a type of Album. 
Format is related to Record. Record is related to Carrier. Carrier is a type of Immune. Immune is the opposite of Vulnerable. 
Storage <--RelatedTo--> Disc <--Synonym--> Album <--IsA-- Chronic 
Format <--RelatedTo--> Record <--RelatedTo--> Carrier --IsA--> Immune <--Antonym--> Vulnerable 