weaponry
n.a group of weapons or the tools used for fighting. It can refer to everything from simple knives to advanced military equipment.
n.weapons collectively, or the set of equipment used for combat and defense. Often used to describe the technological level or specific inventory of an armed force.
“The museum displays ancient weaponry from the Roman era.”
“Modern military forces invest heavily in advanced electronic weaponry to disable enemy communications without physical destruction.”
“The treaty aimed to limit the proliferation of nuclear weaponry while allowing nations to maintain conventional forces for domestic security and border defense.”
Uncountable; refers to a category of objects rather than individual items.
Weaponry is uncountable and refers to the system or collection; use 'weapons' when counting individual items.
From weapon + -ry.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.