military law vs court-martial

military law and court-martial both are nouns.

Word	Noun	Adjective	Verb	Adverb
military law	Yes	No	No	No
court-martial	Yes	No	Yes	No

military law (noun)	court-martial (noun)
the body of laws and rules of conduct administered by military courts for the discipline, trial, and punishment of military personnel	a trial that is conducted by a military court
	a military court to try members of the armed services who are accused of serious breaches of martial law

military law (verb)	court-martial (verb)
	subject to trial by court-martial