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...he same as [[mass]] in both common and scientific usage. In common usage, weight still means the same as [[mass]]. == Weight and mass ==

...ginal copper coins (''[[as (coin)|as]]'') had a face value of one [[Pound (weight)#Origins|Roman pound]] of copper, but weighed less. Thus, Roman money's uti ...|paterfamilias]]''), his wife, children, and other relatives. In the upper classes, slaves and servants were also part of the household. The head of the house