coastguard vs military

coastguard and military both are nouns.

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

coastguard (noun)	military (noun)
a military service responsible for the safety of maritime traffic in coastal waters	the military forces of a nation

coastguard (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