copy editor vs editor in chief

copy editor and editor in chief both are nouns.

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

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

copy editor: an editor who prepares text 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 copy editor include editor.

copy editor (noun)	editor in chief (noun)
an editor who prepares text 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)