awake / awaken / wake / waken
Four verbs for coming or bringing out of sleep.
Wake is the default: wake up, woke, woken. Awake is common as an adjective: I am awake. As a verb it is a little more formal: She awoke at dawn. Awaken and waken mean the same thing and sound more formal still. Do not pile the forms in one piece. Pick wake unless you have a reason not to.
Examples
UseI woke at six.
UseThe noise woke the baby.
UseI was awake before the alarm.
AvoidI was woken up and then awakened again in the same paragraph without cause