I wonder what would be main difference between arpeggiated accompaniament and counter melody.

Could it be the rule that if it's an arpeggiated accompaniament then it would be more repetitive (because it consists mainly of chord notes) than when it would be a counter melody that would vary more in terms of notes used (without sticking to chord notes only and repetiting itself frequently as it would be in the accompaniament).

The song I'm gonna refer to:

In this song, for example, I believe that what Piano is doing is playing arrpegiated chords accompanaying the voice of the singer. Counter melody would be, I assume, when the piano was doing its entirely own thing without as much repetition. What are your thoughs about it?

I wonder what would be the main difference between arpeggiated accompaniment and counter melody.

Could it be the rule that an arpeggiated accompaniment would be more repetitive (because it consists mainly of chord notes), whereas a counter melody would vary more in terms of notes used (without sticking to chord notes only and repeating itself as frequently as it would in the accompaniment).

The song I'm going to refer to:

In this song, I believe that the piano is playing arpeggiated chords accompanying the voice of the singer. Counter melody would be, I assume, when the piano was doing entirely its own thing without as much repetition. What are your thoughts about it?