Pentagon vs military

Pentagon and military both are nouns.

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

Pentagon (noun)	military (noun)
a government building with five sides that serves as the headquarters of the United States Department of Defense	the military forces of a nation
the United States military establishment

Pentagon (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