Difference of law of parsimony-law of objectivity?

law is just one law but laws is two or more laws.

"A law" refers to one specific law or statute. "The law" is a broader philosophical term that refers to the overall system of jurisprudence.

So-called "common Law" can contain references to things both criminal and civil. See related link below:

International governs countries and made up of system of treaties and conventions. it is not enforced. National law on the other hand, is a set of rules implemented in a country with corresponding...

There are different definitions, depending on the country (jurisdiction) and the context. However, the following is usually true: Civil Law is law governing interaction between people. This is...