war machine vs beleaguering

war machine and beleaguering both are nouns.

Word	Noun	Adjective	Verb	Adverb
war machine	Yes	No	No	No
beleaguering	Yes	No	No	No

war machine (noun)	beleaguering (noun)
the military forces of a nation	the action of an armed force that surrounds a fortified place and isolates it while continuing to attack