military vs military police

military and military police both are nouns.

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

military (noun)	military police (noun)
the military forces of a nation	a military corps that enforces discipline and guards prisoners

military (adjective)	military police (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