harass vs devil

harass is not a noun while devil is a noun.

Word	Noun	Adjective	Verb	Adverb
harass	No	No	Yes	No
devil	Yes	No	Yes	No

As verbs, devil is a hypernym of harass; that is, devil is a word with a broader meaning than harass:

Other hypernyms of harass include annoy, bother, chafe, get at, get to, gravel, irritate, nark, nettle, rag, rile, vex.

harass (noun)	devil (noun)
	a word used in exclamations of confusion
	an evil supernatural being
	a cruel wicked and inhuman person
	a rowdy or mischievous person (usually a young man)

harass (verb)	devil (verb)
exhaust by attacking repeatedly	coat or stuff with a spicy paste
annoy continually or chronically	cause annoyance in; disturb, especially by minor irritations