What does the "moon" have to do with "months" in a year?

1.If you stare at the moon for one month straight, you will lose your vision
2.The moon has been around for as many months as the Earth has been around
3.The timespan of a month (~30 days) came from the length of the moon's orbit
4.Each planet has as many moons as it has months

3. The timespan of a month (~30 days) came from the length of the moon's orbit

The word "month" actually derives from the word "moon," as the length of a month is roughly equivalent to the time it takes for the moon to complete one full orbit around the Earth. The concept of a month as a unit of time measurement likely originated from the observation of the moon's phases.