From Wiktionary, the free dictionary
άλλα τα μάτια του λαγού κι άλλα της κουκουβάγιας • (álla ta mátia tou lagoú ki álla tis koukouvágias) (literally: the hare's eyes are one and the owl's are another)
- apples and oranges (said of a comparison of items that are not comparable)
