What is the difference between gravel and sand? | WikiDiff
As nouns the difference between gravel and sand is that gravel is (uncountable) small fragments of rock, used for laying on the beds of roads and railroads, and as ballast while sand is (uncountable) rock that is ground more finely than gravel, but is not as fine as silt (more formally, see ), forming beaches and deserts and also used in construction.