shipboard soldier vs military

shipboard soldier and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
shipboard soldier	Yes	No	No	No
military	Yes	Yes	No	No

shipboard soldier (noun)	military (noun)
a member of the United States Marine Corps	the military forces of a nation

shipboard soldier (adjective)	military (adjective)
	associated with or performed by members of the armed services as contrasted with civilians
	characteristic of or associated with soldiers or the military
	of or relating to the study of the principles of warfare