Code and Codex

noun

• A set of rules or principles or laws (especially written ones.
  • synonyms: codification
• A coding system used for transmitting messages requiring brevity or secrecy.
• Computer science. ( the symbolic arrangement of data or instructions in a computer program or the set of such instructions)
  • synonyms: computer code

verb

• Attach a code to.
  • usage: "Code the pieces with numbers so that you can identify them later"
• Convert ordinary language into code.
  • usage: "We should encode the message for security reasons"
  • synonyms: encipher, cipher, cypher, encrypt, inscribe, write in code

• (n.) A body of law, sanctioned by legislation, in which the rules of law to be specifically applied by the courts are set forth in systematic form; a compilation of laws by public authority; a digest.
• (n.) Any system of rules or regulations relating to one subject; as, the medical code, a system of rules for the regulation of the professional conduct of physicians; the naval code, a system of rules for making communications at sea means of signals.

noun

• An official list of chemicals or medicines etc..
• An unbound manuscript of some ancient classic (as distinguished from a scroll. ).
  • synonyms: leaf-book

• (n.) An ancient manuscript of the Sacred Scriptures or any part of them, particularly the New Testament.
• (n.) A collection of canons.
• (n.) A collection or digest of laws; a code.
• (n.) A book; a manuscript.

(latin) codex - A volume of manuscripts; a code of laws