war machine vs high command

war machine and high command both are nouns.

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

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