armor vs military machine

armor and military machine both are nouns.

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

armor (noun)	military machine (noun)
tough more-or-less rigid protective covering of an animal or plant	the military forces of a nation
protective covering made of metal and used in combat
a military unit consisting of armored fighting vehicles

armor (verb)	military machine (verb)
equip with armor