Codex (noun)

1. A manuscript book, especially of scripture, early literature, or ancient texts.
2. A collection of rules or standards, especially in a particular field or industry.

Origin:

Derived from the latin word "codex" meaning "book or manuscript".

Examples:

1. The codex contained the complete works of the author.
2. The codex was written on parchment and bound in leather.
3. The codex was a valuable and ancient artifact.
4. The company had a strict codex of conduct that all employees were expected to follow.
5. The codex was a comprehensive guide to the rules and regulations of the industry.