Lists, unordered and ordered (<ul>, <ol>, <li>)

Unordered and ordered lists are rendered equally by the browsers except that the ordered list <ol> ought to be used for listing items that suppose to be sorted out by some manner.

Definition lists (<dl>, <dt>, <dd>)

Definition lists are commonly used to help define or explain listed items. The listed item is made of two parts, definition term <dt> and definition description <dd>...