Pound is a synonym of Sharp. Sharp is the opposite of Thick. Thick is a synonym of Intimate. 
Expectation is a synonym of Prospect. Prospect is a type of Potential. Potential is a type of Possibility. 
Pound <--Synonym--> Sharp <--Antonym--> Thick <--Synonym--> Intimate 
Expectation <--Synonym--> Prospect --IsA--> Potential --IsA--> Possibility 