C sharp: differences between pile stack and heap heap, pile, stack, sharp, differences

Can anyone help explain about the differences between pile stack and heap in C# programming?

The heap and the stack are the two places where programs store data.

The stack is a data structure in memory used for storing items in a last-in, first-out manner (LIFO).
The heap is a big chunk of memory that is managed by a heap manager.

With value types, if you declare them in a method, then they are on the
stack.

If they are fields in a class, then those are on the heap, because
the instance of the class itself is on the heap.

I'm not sure if 'pile' is any key word in C#. When talked about pile, I think it refers to stack.

Memory	Contents	Item Order	Item Lifetime	Item Removal
Stack	Value types	Sequential (LIFO)	scope	pop
Heap	Objects	Random	reference count	Garbage Collection