Negotiation is a synonym of Dialogue. Conversation is a type of Dialogue. Exchange is a type of Conversation. Cash is a type of Exchange. 
Hope is related to Candidate. Candidate is a type of Person. Spanish is a type of Person. 
Negotiation <--Synonym--> Dialogue <--IsA-- Conversation <--IsA-- Exchange <--IsA-- Cash 
Hope <--RelatedTo--> Candidate --IsA--> Person <--IsA-- Spanish 