Actual is the opposite of Virtual. Virtual is the opposite of Real. Real is related to Butter. Butter is related to Oil. 
Widow is related to Glass. Glass is related to Hard. Hard is related to Shoe. 
Actual <--Antonym--> Virtual <--Antonym--> Real <--RelatedTo--> Butter <--RelatedTo--> Oil 
Widow <--RelatedTo--> Glass <--RelatedTo--> Hard <--RelatedTo--> Shoe 