According to Strong’s Concordance the Hebrew word ‘erets means "common, country, earth, field, ground, land, x nations, way, + wilderness, world." So the word besides meaning earth, can just as easily mean land (i.e. Mesopotamia).
Kwa mujbu wa Strong’s Concordance neno la Kiebrania ‘erets linamaanisha "-a kawaida, nchi, dunia, shamba, ardhi, mataifa, njia, nyika, ulimwengi." Hivyo mbali ya kumaanisha dunia, neno hili linaweza likamaanisha pia nchi (yaani Mesopotamia).