Merit system and System of rules

Merit system noun - The system of employing and promoting civil servants on the basis of ability.

System of rules and merit system are semantically related. In some cases you can use "System of rules" instead a noun phrase "Merit system".

System of rules noun - A complex of methods or rules governing behavior.

Merit system and system of rules are semantically related. Sometimes you can replace phrase "Merit system" with "System of rules", this phrases are similar.