harass vs nettle

harass is not a noun while nettle is a noun.

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

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

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

harass (noun)	nettle (noun)
	any of numerous plants having stinging hairs that cause skin irritation on contact (especially of the genus Urtica or family Urticaceae)

harass (verb)	nettle (verb)
exhaust by attacking repeatedly	cause annoyance in; disturb, especially by minor irritations
annoy continually or chronically	sting with or as with nettles and cause a stinging pain or sensation