bother vs hassle

bother and hassle both are nouns.

Word	Noun	Adjective	Verb	Adverb
bother	Yes	No	Yes	No
hassle	Yes	No	Yes	No

As nouns, bother and hassle are synonyms defined as:

Other synonyms of bother include fuss, trouble.

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

bother (noun)	hassle (noun)
something or someone that causes trouble; a source of unhappiness	disorderly fighting
an angry disturbance	an angry disturbance

bother (verb)	hassle (verb)
cause annoyance in; disturb, especially by minor irritations	annoy continually or chronically
make confused or perplexed or puzzled
make nervous or agitated
intrude or enter uninvited
take the trouble to do something; concern oneself
to cause inconvenience or discomfort to