law vs authorisation

law and authorisation both are nouns.

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

law (noun)	authorisation (noun)
the learned profession that is mastered by graduate study in a law school and that is responsible for the judicial system	the act of conferring legality or sanction or formal warrant
a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society	the power or right to give orders or make decisions
a generalization that describes recurring facts or events in nature	official permission or approval
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do	a document giving an official instruction or command
legal document setting forth rules governing a particular kind of activity
the collection of rules imposed by authority
the force of policemen and officers