🪖mũ sắt quân độiA military helmet. Means military, protection and history. Use it for military contexts and history posts.
🦺áo bảo hộA safety vest. Means construction, safety and high visibility. Use it for work zones and safety-first talk.
💂bảo vệA guard. Means security, protection and standing watch. Use it for security staff and "guard dog" jokes.