Definition

1. Noun:
   • Rust: The reddish-brown flaky coating that forms on iron or steel when exposed to moisture and air, resulting from oxidation.
   • Corrosion: The process or result of a metal being gradually destroyed by chemical reactions, typically oxidation.

Usage Examples

• Noun:
  • Cánh cổng sắt đã bị han gỉ. (The iron gate has rusted.)
  • Phải cạo sạch lớp han gỉ trước khi sơn lại. (You must scrape off the layer of rust before repainting.)

Advanced Usage

• "ăn han gỉ": to be corroded/rusted through.
  • Chiếc đinh này đã ăn han gỉ, không dùng được nữa. (This nail has rusted through and is no longer usable.)

Variants and Related Words

• Han (n): A less common, abbreviated form meaning rust.
• Gỉ (n): A common, colloquial synonym for rust, often used interchangeably with "han gỉ".
  • Gỉ sắt: Iron rust (a common compound term).
• Rỉ (n): An alternative spelling for "gỉ", also meaning rust.
• Rỉ sét (n): Another common synonym for rust.

Synonyms

• Rỉ: Rust.
• Ô-xít hóa: Oxidation (the chemical process).

Related Phrases

• Han gỉ ăn vào: Rust has set in deeply; to be severely corroded.
  • Phần chân cột đã han gỉ ăn vào. (The base of the pillar is severely corroded.)