sand
In Italian, 'sabbia' is the term used to describe sand. It is used in the same contexts as in English, such as at the beach or in a sandbox. It can also be used metaphorically, for example, 'la sabbia del tempo' (the sands of time) to refer to the passage of time.
I built a sandcastle on the beach.
This sentence is about someone who has made a sandcastle on the beach. In Italian, 'castello di sabbia' translates directly to 'sand castle' and 'sulla spiaggia' translates to 'on the beach'.
I found a grain of sand in my eye.
This sentence is about someone who has found a grain of sand in their eye. In Italian, 'granello di sabbia' translates directly to 'grain of sand' and 'nel mio occhio' translates to 'in my eye'.
The desert sand is very hot in the sun.
This sentence is about the temperature of the desert sand when it is sunny. In Italian, 'sabbia del deserto' translates directly to 'desert sand', 'molto calda' translates to 'is very hot', and 'al sole' translates to 'in the sun'.