law vs legal separation

law and legal separation both are nouns.

Word	Noun	Adjective	Verb	Adverb
law	Yes	No	No	No
legal separation	Yes	No	No	No

law (noun)	legal separation (noun)
the learned profession that is mastered by graduate study in a law school and that is responsible for the judicial system	(law) the cessation of cohabitation of man and wife (either by mutual agreement or under a court order)
a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society	a judicial decree regulating the rights and responsibilities of a married couple living apart
a generalization that describes recurring facts or events in nature
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do
legal document setting forth rules governing a particular kind of activity
the collection of rules imposed by authority
the force of policemen and officers