The Moon is the name that's been approved by the International Astronomical Union (IAU), which is the internationally recognized body for naming anything outside of Earth's atmosphere. The Moon is called as such because it doesn't need any other name. It's not just any moon, it's the Moon. read more
Luna is a poetic word which means Moon. Moon it is the name of the huge rock which is/are revolving around the planets. to differentiate our planet moon from other planets scientists have given names to the other planet moons. read more