Accordion vs collapsable section

Is there any difference in accordions vs collapsable sections? Can we say that accordions have data, and collapsable sections have a layout? But, how do we visually differentiate between them? The accordion can have arrows on the left and right, and so does collapsable sections. Is there any clarification between those two elements?

Let's say, by collapsable section I mean like longer forms, you have sections that can be collapsed to have a more organised form and to hide unwanted sections for the time being.

Accordion is more like FAQ. Sections does not close when you expand another section while accordion can only one be opened at same time.

Does anyone have any better definition of what is what and how to visually separate them?