awake vs awaken

awake is an adjective but awaken is not an adjective.

Word	Noun	Adjective	Verb	Adverb
awake	No	Yes	Yes	No
awaken	No	No	Yes	No

As verbs, awake and awaken are synonyms defined as:

Other synonyms of awake include arouse, come alive, wake, wake up, waken.

awake (adjective)	awaken (adjective)
not in a state of sleep; completely conscious
mentally perceptive and responsive

awake (verb)	awaken (verb)
stop sleeping	cause to become awake or conscious
	stop sleeping
	make aware