Exchange is related to Rate. Rate is a synonym of Range. Range is a synonym of Image. Image is a synonym of Conception. 
Confession is a type of Document. Document is a type of Communication. Communication is related to Sound. 
Exchange <--RelatedTo--> Rate <--Synonym--> Range <--Synonym--> Image <--Synonym--> Conception 
Confession --IsA--> Document --IsA--> Communication <--RelatedTo--> Sound 