> The Americas, or America, (Spanish: América, Portuguese: América, French: Amérique, Dutch: Amerika, Aymara: Amërika, Quechua: Amirika, Guaraní: Amérika) are lands in the Western hemisphere, also known as the New World.

I was initially being sarcastic but if you want to get serious on the topic, let's at least admit that there would indeed be confusion for an extraterrestrial coming to Earth for the first time. Wouldn't you find it funny if people from China were called Asians instead of Chinese or if Mexican people called themselves Americans instead of Mexicans?