law vs opinion

law and opinion both are nouns.

Word	Noun	Adjective	Verb	Adverb
law	Yes	No	No	No
opinion	Yes	No	No	No

law (noun)	opinion (noun)
the learned profession that is mastered by graduate study in a law school and that is responsible for the judicial system	the reason for a court's judgment (as opposed to the decision itself)
a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society	a personal belief or judgment that is not founded on proof or certainty
a generalization that describes recurring facts or events in nature	a belief or sentiment shared by most people; the voice of the people
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do	a vague idea in which some confidence is placed
legal document setting forth rules governing a particular kind of activity	the legal document stating the reasons for a judicial decision
the collection of rules imposed by authority	a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof
the force of policemen and officers