Code of conduct and Codex

Code of conduct noun - A set of conventional principles and expectations that are considered binding on any person who is a member of a particular group.

Codex and code of conduct are semantically related. In some cases you can use "Codex" instead a noun phrase "Code of conduct".

Codex noun - An unbound manuscript of some ancient classic (as distinguished from a scroll).

Code of conduct and codex are semantically related. You can use "Code of conduct" instead a noun "Codex".