Pulse is etymologically related to False. Pulse is a type of Rate. Rate is related to Cost. Cost is related to Accounting. 
Mass is related to Pass. Pass is a type of Advance. Advance is related to Being. 
False <--EtymologicallyRelatedTo-- Pulse --IsA--> Rate <--RelatedTo--> Cost <--RelatedTo--> Accounting 
Mass <--RelatedTo--> Pass --IsA--> Advance <--RelatedTo--> Being 