noun
chemical attack
Refers to an attack using chemical weapons or toxic substances, often in military or terrorism contexts.
その地域では化学攻撃の被害が報告された。
Damage from a chemical attack was reported in that area.
生物兵器 refers to biological weapons, while 化学攻撃 is the act of attacking with chemical agents.
Compound of 化学 (chemistry) and 攻撃 (attack).