harass vs frustrate

harass and frustrate both are verbs.

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

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

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

harass (verb)	frustrate (verb)
exhaust by attacking repeatedly	treat cruelly
annoy continually or chronically	hinder or prevent (the efforts, plans, or desires) of