What are the advantages of using an Oscilloscope over a voltmeter?

In the name of Allah,the most Gracious,the most Merciful...

The Oscilloscope has several advantages over a voltmeter, for example if you want to determine a signal parameters [ voltage values (max,peak-to-peak,rms,average...etc),frequency,offset...etc ] using measurement tools:

1- You can use the Oscilloscope whatever the signal frequency is, but you can't use the Avometer unless the signal frequency is 50 to 60 Hz.

2- The Oscilloscope shows you the shape (form) of the signal, while the Avometer doesn't.

3- You can determine the maximum value of the signal (max voltage) and peak-to-peak voltage when you observe the signal on an Oscilloscope,hence you can calculate the rms (root mean square) value, i.e. the effective value , the average value and the offset of signal form the time axis (the horizontal axis).

While an Avometer can only give you the rms value.