Common App Essays vs. Supplement Essays

<p>Hi! I'm new here, so I'm sorry if I'm not putting this in the right place.
I have a question about the common app essay vs. the supplement essays. I heard somewhere that if the common app essay is about something specific (such as a specific day that you remember or something like that) that the supplement essays should be about more general things. Do any of you know if this is true or not? And if it is, I'm a bit confused as to what it means. How general should you be? Thank you. :)</p>

<p>Commonapp is a common essay for all universities while the supplement is an individual essay for each university</p>