Moon
month
moonlight
(a) moon; natural satellite
「月」 has another reading with different meanings.
Monday
(natural) satellite; moon
今夜の月はとてもきれいですよ。
Tonight's moon is very beautiful, isn't it?
その月は休みが多かった。
That month had many days off.
三日月が山の向こうに沈んだ。
The crescent moon set behind the mountains.