harass vs torment

harass is not a noun while torment is a noun.

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

As verbs, torment is a hyponym of harass; that is, torment is a word with a more specific, narrower meaning than harass:

Other hyponyms of harass include goad, needle, bedevil, crucify, dun, frustrate, rag, haze.

harass (noun)	torment (noun)
	the act of harassing someone
	a severe affliction
	intense feelings of suffering; acute mental or physical pain
	extreme mental distress
	a feeling of intense annoyance caused by being tormented
	unbearable physical pain

harass (verb)	torment (verb)
exhaust by attacking repeatedly	subject to torture
annoy continually or chronically	torment emotionally or mentally
	treat cruelly