Jus Genitum is the law of nation which is applicable over all the citizen of the nation, whereas jus civile is the law of civil, applicable over the particular state or people of the state.
Step-by-step explanation:
Law of nations is generally treated among the category of international law which establishes the identity of citizen of the nation at global platform and deals with the cases between the international or foreign personnel against the citizen of the nation.
Law of civil, is the on the other hand, pertaining to the civil rights and duties of the state or the people of the state, where the cases are dealt at national platform. It deals with the cases between the two citizen of the same nation, may or may not be from different state of the nation. It may also be against a person with case against the state, but not against another nation.