Diplomat is related to Ambassador. Ambassador is related to Diplomatic. Diplomatic is related to Treaty. Treaty is related to International. 
Launch is a type of Smooth. Launch is a synonym of Plunge. 
Diplomat <--RelatedTo--> Ambassador <--RelatedTo--> Diplomatic <--RelatedTo--> Treaty <--RelatedTo--> International 
Smooth <--IsA-- Launch <--Synonym--> Plunge 