Main differences between a List and a Set are:

1. Order: List collection is an ordered sequence of elements.

A Set is just a distinct collection of elements that is

unordered.

2. Positional Access: When we use a List, we can specify

where exactly we want to insert an element. In a Set there

is no order, so we can insert element anywhere without

worrying about order.

3. Duplicate: In a List we can store duplicate elements. A Set

can hold only unique elements

https://www.javatpoint.com/list-vs-set-in-java#:~:text=List%20and%20Set%20interfaces%20are,the%20same%20elements%20in%20it.