Spread is related to Preserve. Preserve is related to Buck. Buck is a synonym of Single. Single is related to Bacteria. 
Restaurant is the opposite of Dining. Dining is related to Room. Room is related to Rent. Rent is related to Revenue. 
Spread <--RelatedTo--> Preserve <--RelatedTo--> Buck <--Synonym--> Single <--RelatedTo--> Bacteria 
Restaurant <--Antonym--> Dining <--RelatedTo--> Room <--RelatedTo--> Rent <--RelatedTo--> Revenue 