The modern English word 'Earth' actually dates back at least a 1,000 years.
It originates from the 'Anglo-Saxon' (English-German) language where the word 'erda' and it's Germanic equivalent 'erde' means ground/soil. In Old English, the word 'Earth' became 'eor(th)e' or 'ertha '.
Also, the Earth is the only planet in the solar system whose name didn't originate from Greece-Roman mythology.
