serviceman vs military

serviceman and military both are nouns.

Word	Noun	Adjective	Verb	Adverb
serviceman	Yes	No	No	No
military	Yes	Yes	No	No

serviceman (noun)	military (noun)
someone who serves in the armed forces; a member of a military force	the military forces of a nation

serviceman (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