Bulk is etymologically related to Bucket. Bulk is a synonym of Majority. 
Gesture is related to Middle. Middle is related to Location. Location is related to Register. Register is related to Cash. 
Bucket <--EtymologicallyRelatedTo-- Bulk <--Synonym--> Majority 
Gesture <--RelatedTo--> Middle <--RelatedTo--> Location <--RelatedTo--> Register <--RelatedTo--> Cash 