military vs drill instructor

military and drill instructor both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
drill instructor	Yes	No	No	No

military (noun)	drill instructor (noun)
the military forces of a nation	a noncommissioned officer who instructs recruits in military marching and discipline

military (adjective)	drill instructor (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