A form doesn't do a whole lot of good if you don't have a way to enter the data. For that there is the Form Element.
There are actually quite a few. The most used by far is the input element which has a miriad of options. This is a list...
They don't all work independently... some of them support other elements. For example you wouldn't use the
<option> tag unless it was a child of
At the same time the
<legend> tag wouldn't do much good unless it was a child of a
<label> has an association with all of them... at least the main elements.