Silent is the opposite of Noise. Noise is related to Ear. Ear is part of Corn. you are likely to find Corn in/at/on Supermarket. 
Discover is a synonym of Identify. Identify is a synonym of Name. Refer is a type of Name. 
Silent <--Antonym--> Noise <--RelatedTo--> Ear --PartOf--> Corn --AtLocation--> Supermarket 
Discover <--Synonym--> Identify <--Synonym--> Name <--IsA-- Refer 