What are the two type of lists?

ul means unorded list. It is for lists in whick it doesn't matter what order the list items are in.

ol means ordered list. It is for lists that are numbered or in some way show that they have a specific ordering.

By default ul gets you bullet pointed lists and ol numbered lists, although this can be edited in css.

Unordered lists means a list without setting up a number to the particular list .

ex:   Tea

Ordered lists means a list contains a number to a particular list.

ex:1.Tea