Goal is related to Fit. Fit is related to Workout. Workout is a synonym of Practice. Convention is a type of Practice. 
Liquid is related to Mass. Mass is the opposite of Volume. 
Goal <--RelatedTo--> Fit <--RelatedTo--> Workout <--Synonym--> Practice <--IsA-- Convention 
Liquid <--RelatedTo--> Mass <--Antonym--> Volume 