engagement vs military machine

engagement and military machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
engagement	Yes	No	No	No
military machine	Yes	No	No	No

engagement (noun)	military machine (noun)
the act of sharing in the activities of a group	the military forces of a nation
a hostile meeting of opposing military forces in the course of a war
the act of giving someone a job
employment for performers or performing groups that lasts for a limited period of time
a mutual promise to marry
contact by fitting together
a meeting arranged in advance