Block is a synonym of Cake. Cake is related to Day. 
Citizen is the opposite of Stranger. Stranger is related to Foreign. Foreign is related to Correspondent. Correspondent is related to Term. 
Block <--Synonym--> Cake <--RelatedTo--> Day 
Citizen <--Antonym--> Stranger <--RelatedTo--> Foreign <--RelatedTo--> Correspondent <--RelatedTo--> Term 