What is the difference between Ascended Being and an Awakened Being?

An Awakened being is the person who has realized there is more to life than just the material world, has the capacity to see beyond the veil of forgetfulness and is in the process of ascension.
An Ascended being is living in a state of Oneness. There is no "individual", but a Oneness consciousness and uses the traits of their human existence to communicate.

It is practically impossible to live in a state of Oneness 24/7 and keep a normal lifestyle. That's why throughout the life of the Ascended person, they will need to continuously strive to do a daily practice of meditation, quieting the mind, and allowing Flow.  The article Ascension Worker gives a very detailed description of what it means to live in an Ascended state.