jus civile vs civil law

jus civile and civil law both are nouns.

Word	Noun	Adjective	Verb	Adverb
jus civile	Yes	No	No	No
civil law	Yes	No	No	No

As nouns, jus civile and civil law are synonyms defined as:

jus civile and civil law: the legal code of ancient Rome; codified under Justinian; the basis for many modern systems of civil law

Other synonyms of jus civile include Justinian code, Roman law.

jus civile (noun)	civil law (noun)
the legal code of ancient Rome; codified under Justinian; the basis for many modern systems of civil law	the legal code of ancient Rome; codified under Justinian; the basis for many modern systems of civil law
	the body of laws established by a state or nation for its own regulation