Array-related terminology

In this step we have this statement:

This is known as a multi-dimensional array, or an array that contains other arrays.

In my own research I’ve run into bunch of definitions like:

A multidimensional array or object is one that has one or more nested arrays or objects as property values .
And some other which are not exactly clear

Need some clarification:
Array of objects or array of sets - is it considered multidimensional or not?

I’ve more often seen people say that an array is multi-dimensional and an object is nested. They mean the same thing though.

2 posts were split to a new topic: Step 18 Help Jarvis