what is the difference between the verbs 

wake

waken

 awake 

awaken 

i found this but still don't know when to use each one of them

awake
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">intransitive</em>: to come out of the state of sleep; to cease to sleep
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">transitive</em>: to arouse (someone) from sleep.

awaken
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">intransitive</em>: to arise or spring into existence
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">transitive</em>: to rouse from sleep

wake
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">intransitive</em>: to be or remain awake; to keep oneself, or be kept, awake
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">transitive</em>: to rouse from sleep or unconsciousness

waken
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">intransitive</em>: to cease to sleep; to become awake
<em style="max-height: 500000px; margin: 0px; padding: 0px; border: 0px; background: none;">transitive</em>: To rouse (a person or animal) from sleep or unconsciousness.