high command vs military machine

high command and military machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
high command	Yes	No	No	No
military machine	Yes	No	No	No

high command (noun)	military machine (noun)
the highest leaders in an organization (e.g. the commander-in-chief and senior officers of the military)	the military forces of a nation