Comment by Willio2000 on Urenokori no Dorei Elf o Hirotta no de, Musume ni Suru Koto ni shita - Chapter 1

@Willio2000 You can also replace "earth" with the name of the fantasy world or dimension.

@Galactic Navy Officer They should've just said the name of it then

@Willio2000 Or they can assume the readers have brains and not waste time on Fantasy Name Generator.

@Willio2000 a world can be named anything that the person naming wants... so the world could be named "Earth" but is a different world. Or the continent's name could be "Earth"

@Galactic Navy Officer their world is Earth for everyone. 

For us, our Earth is called Terra and we are known as Terrans, but it is still technically 'Earth'.

Though the specific name may differ, Earth is still Earth.