The Moon (Latin: Luna) is Earth's only natural satellite.
The Moon is thought to have formed approximately 4.5 billion years ago, not long after Earth.
The Moon is in synchronous rotation with Earth,
The Moon's gravitational influence produces the ocean tides and the slight lengthening of the day.
NASA's New Moon Plans: 'Apollo on Steroids', Space.com article headline.
Used in the Ending of Sentence
The closest previous sighting of an Earth-grazing asteroid was in March of 1989. It was 330 feet in diameter and passed at 10 times the distance to the moon.
According to the process that may have formed the Solar System planets, the surrounding discs of material around the gas giants gradually coalesced into moons.
Meaning of moon for the defined word.
Grammatically, this word "moon" is a noun, more specifically, a countable noun. It's also a verb, more specifically, an intransitive verb and a transitive verb.