rewriting vs editing

rewriting and editing both are nouns.

Word	Noun	Adjective	Verb	Adverb
rewriting	Yes	No	No	No
editing	Yes	No	No	No

As nouns, editing is a hypernym of rewriting; that is, editing is a word with a broader meaning than rewriting:

rewriting: editing that involves writing something again
editing: putting something (as a literary work or a legislative bill) into acceptable form

Other hypernyms of rewriting include redaction.

rewriting (noun)	editing (noun)
editing that involves writing something again	putting something (as a literary work or a legislative bill) into acceptable form