Solid is similar to Concrete. you are likely to find Concrete in/at/on Carpet. 
Hearing is a synonym of Ear. Ear is related to Receiver. Receiver is a synonym of Recipient. 
Solid <--SimilarTo--> Concrete --AtLocation--> Carpet 
Hearing <--Synonym--> Ear <--RelatedTo--> Receiver <--Synonym--> Recipient 