What is variety of pasta in form grains rice or barley used greek cuisine and to thicken soups?

The pasta used in Greek cuisine to thicken soups and resemble grains like rice or barley is called "kritharaki".

Kritharaki is a type of pasta that resembles small, elongated grains of rice or barley. It is often used in soups, stews, and salads, adding a hearty texture and a subtle flavor. It is also known as "orzo" in Italian.