editing vs rewriting

editing and rewriting both are nouns.

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

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

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

Other hyponyms of editing include copy editing, cut, deletion, excision, correction, revising.

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