They're both ancient Greek, but different grammatical genders: neon (νέον) is neuter, while γένεσις is feminine. Better might have been "nea genesis" if those

They're both ancient Greek, but different grammatical genders: neon (νέον) is neuter, while γένεσις is feminine. Better might have been "nea genesis" if those two words were to be interpreted together. But, "evangelion" (εὐαγγέλιον) is also Greek and neuter, meaning the gospel, good news, or a reward owed a messenger for his good news. I always figured the "new" of "neon" belonged with the "evangelion," and "genesis" was just kind of hanging around for no particular reason.