rewriter vs editor in chief

rewriter and editor in chief both are nouns.

Word	Noun	Adjective	Verb	Adverb
rewriter	Yes	No	No	No
editor in chief	Yes	No	No	No

As nouns, editor in chief is a hypernym of rewriter; that is, editor in chief is a word with a broader meaning than rewriter:

rewriter: someone who puts text into appropriate form for publication
editor in chief: a person responsible for the editorial aspects of publication; the person who determines the final content of a text (especially of a newspaper or magazine)

Other hypernyms of rewriter include editor.

rewriter (noun)	editor in chief (noun)
someone who puts text into appropriate form for publication	a person responsible for the editorial aspects of publication; the person who determines the final content of a text (especially of a newspaper or magazine)