What's the difference between beat, beat and rhythm?

Rhythm: The relationship between the length of an organized sound is called rhythm. Beat: Strong beat and weak beat with the same time value appear regularly and circularly, which is called beat. Beat is also called beat.

Strictly speaking, a completely accurate beat does not necessarily mean a completely accurate rhythm. When learning the piano, we must first grasp the beat, and then we can show the rhythm of music, so as to better improve the integrity of music.