hardware vs weapons system

hardware and weapons system both are nouns.

Word	Noun	Adjective	Verb	Adverb
hardware	Yes	No	No	No
weapons system	Yes	No	No	No

As nouns, weapons system is a hypernym of hardware; that is, weapons system is a word with a broader meaning than hardware:

Other hypernyms of hardware include arms, implements of war, munition, weaponry.

hardware (noun)	weapons system (noun)
(computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system	weapons considered collectively
major items of military weaponry (as tanks or missile)
instrumentalities (tools or implements) made of metal