sorrow vs remorse

sorrow and remorse both are nouns.

Word	Noun	Adjective	Verb	Adverb
sorrow	Yes	No	Yes	No
remorse	Yes	No	No	No

As nouns, remorse is a hyponym of sorrow; that is, remorse is a word with a more specific, narrower meaning than sorrow:

Other hyponyms of sorrow include attrition, contriteness, contrition, compunction, self-reproach.

sorrow (noun)	remorse (noun)
something that causes great unhappiness	a feeling of deep regret (usually for some misdeed)
an emotion of great sadness associated with loss or bereavement
sadness associated with some wrong done or some disappointment
the state of being sad

sorrow (verb)	remorse (verb)
feel grief