If you put 'Name One' in the first element, and 'Name Two' in the second element, the value of the form element after submit will be "Name One, Name Two". When you have multiple form elements with the same name, the data from those form elements is combined into a list during the form submit.
This can be very useful for forms which have a dynamic number of elements. You can use loops to work through the data of the elements, where you use the comma , as the delimiter of the data in the list.
Another option is to add a hidden form element where the value is the number N for the N number of elements. And each element has a different name. When you submit the form your server side code will get the hidden element and its value and that way you can know the number of N elements after the submit. For example the following:
After the form submit you know the number of elements from the value of the COUNT form element. You can then use that accordingly to process your form elements with loops and other methods, for the server side platform you are using, such as ASP.NET, ColdFusion, or PHP.