This is the 32nd most frequent Japanese word.
月
"月" means "moon" or "month" in English.
Here, '月' means a month, indicating a unit of time.
毎月の会議は第2週に行われます。
The monthly meeting is held during the second week.
In this sentence, '月' is used within the context of the calendar and refers to the upcoming month.
来月、新しいプロジェクトが始まります。
A new project will begin next month.
In this sentence, '月' refers to the astronomical object, the Moon.