ITeraTORS vs ITerable

I am giving the simple relation between the generator,iterator,iterable and container:
just have a look at it:

First we gonna see about the two things. They are :Iterator and Iterable
Iterators: An Iterator is an object with next() method.
Iterable: Iterable is an object,not necassarily a data structure that can return an iterator

considering a simple example to get the sense of difference between iterator and iterable:

>>> x = [1, 2, 3]
>>> y = iter(x)
>>> z = iter(x)
>>> next(y)
1
>>> next(y)
2
>>> next(z)
1
>>> type(x)
<class 'list'>
>>> type(y)
<class 'list_iterator'>

here x is an iterable where as y and z are instances of the iterable ,producing values from that iterable x.It is also produce results finite for infinite instances and vice versa.Hence its better to use for loops.

These will give the basic ideas for iterables and iterators.
I update this for my self learning too :):)