pre-emption vs law

pre-emption and law both are nouns.

Word	Noun	Adjective	Verb	Adverb
pre-emption	Yes	No	No	No
law	Yes	No	No	No

pre-emption (noun)	law (noun)
a prior appropriation of something	the learned profession that is mastered by graduate study in a law school and that is responsible for the judicial system
the right to purchase something in advance of others	a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society
the right of a government to seize or appropriate something (as property)	a generalization that describes recurring facts or events in nature
the judicial principle asserting the supremacy of federal over state legislation on the same subject	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