Worldwide is the opposite of Local. Local is related to Definition. Definition is related to Sound. Lend is etymologically related to Sound. 
Rate is related to Exchange. Exchange is related to Payment. 
Worldwide <--Antonym--> Local <--RelatedTo--> Definition <--RelatedTo--> Sound <--EtymologicallyRelatedTo-- Lend 
Rate <--RelatedTo--> Exchange <--RelatedTo--> Payment 