Unlike other planets like Jupiter which is named after the Roman God Jupiter, who is the equivalent of the Greek God. Even Mars, Pluto and all others are named after Roman gods who are copies of the Greek ones. Earth got it’s name before the time of Copernicus, when the planetary system was modified a lot. Earth is a term from an old Germanic language meaning the soil that is source of all life. Lots of languages about a hundred referred to the fertile soil as Terra Mater, which means Mother Earth. If we had named earth after the god of fertile soil of the Romans, the planet would currently be called Tellus.
Some small facts about the planet, 71% of the planet is covered with water. Earth is the third planet farthest from the sun, the fifth largest in the solar system.