🛑ký hiệu dừngA stop sign. Means stopping, halting and boundaries. Use it for "stop right there" and road safety.
🤬mặt có các ký hiệu trên miệngA face with symbols over the mouth — the manga way of censoring swearing. Conveys anger and cursing.
☢️phóng xạRadioactive. Means radiation, hazard and glowing danger. Use it for hazard warnings and "toxic" jokes.
☣️nguy hiểm sinh họcBiohazard. Means biohazards, contamination and danger. Use it for hazard warnings and zombie-apocalypse jokes.