sleep vs arouse

sleep is a noun but arouse is not a noun.

Word	Noun	Adjective	Verb	Adverb
sleep	Yes	No	Yes	No
arouse	No	No	Yes	No

sleep (noun)	arouse (noun)
a natural and periodic state of rest during which consciousness of the world is suspended
euphemisms for death (based on an analogy between lying in a bed and in a tomb)
a torpid state resembling deep sleep
a period of time spent sleeping

sleep (verb)	arouse (verb)
be asleep	cause to be alert and energetic
be able to accommodate for sleeping	cause to become awake or conscious
	stop sleeping
	summon into action or bring into existence, often as if by magic
	call forth (emotions, feelings, and responses)
	to evoke sexual feelings
	to begin moving