Barrel is related to Liquid. Liquid is related to Matter. 
Note is related to Later. Later is the opposite of Early. Early is similar to Old. Old is related to Constitution. 
Barrel <--RelatedTo--> Liquid <--RelatedTo--> Matter 
Note <--RelatedTo--> Later <--Antonym--> Early <--SimilarTo--> Old <--RelatedTo--> Constitution 