military vs coastguard

military and coastguard both are nouns.

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

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

military (adjective)	coastguard (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