armament vs mobilization

armament and mobilization both are nouns.

Word	Noun	Adjective	Verb	Adverb
armament	Yes	No	No	No
mobilization	Yes	No	No	No

As nouns, mobilization is a hypernym of armament; that is, mobilization is a word with a broader meaning than armament:

armament: the act of equipping with weapons in preparation for war
mobilization: act of assembling and putting into readiness for war or other emergency:

Other hypernyms of armament include militarisation, militarization, mobilisation.

armament (noun)	mobilization (noun)
the act of equipping with weapons in preparation for war	act of marshaling and organizing and making ready for use or action
weaponry used by military or naval force	act of assembling and putting into readiness for war or other emergency: