Ounce
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The ounce is any of several different units of mass, weight, or volume and is derived almost unchanged from the uncia, an Ancient Roman unit of measurement.
Droste's Instant Cocoa with a net weight of 8 ounces
Pound (mass)
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The pound or pound-mass is a unit of mass used in both the British imperial and United States customary systems of measurement. Various definitions have been used; the most common today is the interna
One-pound avoirdupois weight, from the Musée des Arts et Métiers
Various historic pounds from a German textbook dated 1848
The tower pound displayed as the weight of a pound sterling of 240 early silver pennies (original pennyweight)