legislation vs civil law

legislation and civil law both are nouns.

Word	Noun	Adjective	Verb	Adverb
legislation	Yes	No	No	No
civil law	Yes	No	No	No

As nouns, civil law is a hypernym of legislation; that is, civil law is a word with a broader meaning than legislation:

legislation: law enacted by a legislative body
civil law: the body of laws established by a state or nation for its own regulation

legislation (noun)	civil law (noun)
the act of making or enacting laws	the legal code of ancient Rome; codified under Justinian; the basis for many modern systems of civil law
law enacted by a legislative body	the body of laws established by a state or nation for its own regulation