some other large wasps are sometimes referred to as "hornets". this is particularly true for the bald-faced hornet in north america. the bald-faced hornet is mostly black and white in coloring. this is very different from the black-and-yellow coloring of other wasps. it is set apart by its black and ivory coloration. the name "hornet" is used for this and related species mainly because of their habit to make aerial nests (similar to the true hornets') rather than the nests underground the wasps use. another example is the australian hornet, which is actually a species of potter wasp.