Sixteen ounces is a pound of weight. Sixteen ounces is a pint of liquid. That is, two cups. or 32 tablespoons. But is there any liquid or dry substance that one pint of --actually weighs one pound?

A pint of water weighs a pound.

Thanks, this question is more basic than I thought.
I know water is a liquid measure, but dry measure, as with cooking—is it consistent? Is there any DRY substance where two cups would weigh a pound? (yes, I know it would be water as @zenvelo points out) but dry measure is supposedly not always consistent. Two cups of grits are not necessarily 1 lb or the same weight as a pint of water —or are they?

Water comes close but not quite. It is about 1.04 lb/pint. Metric is much more convenient. A liter of water is exactly one kilogram.

Not that I know of.

Metric thought of these things, as the jelly above me mentioned, but I don’t think that sort of logic was used when coming up with the measures that America uses. Our standard measures are based on the British system of old, and now even the Royal (British) gallon is different than the American gallon, and I think a ton is a different weight also in each country, and the Brits use the term stone and Americans don’t.

I don’t think anything has exactly the same density as water and the density of water varies with temperature anyway. You could create a mixture of dry substances so that a pint would weigh exactly one pound but then you would wonder if it was worth the effort.