As nouns the difference between hippopotamus and rhinocerus

is that hippopotamus is a large, semi-aquatic, herbivorous (plant-eating) African mammal (species: Hippopotamus amphibius) that spends most of the day living in water, but comes on to land at night to feed. Of all living land animals, only the rhinoceros and elephant are larger while rhinocerus is misspelling of rhinoceros.