黒

1. Origins, structure, and basic meaning

• Structure: 黒 (くろ) is a noun naming the color black.
• Basic usage: It is used when choosing a black item or drawing something in black.
  • 今日は黒の靴を選んだ。 — I chose black shoes today.
  • 白い紙に黒で太い線を引いた。 — I drew a thick black line on white paper.

2. Common pitfalls and similar expressions

• Color noun and adjective
  • The color noun 黒 modifies another noun with の, as in 黒の靴, while 黒い靴 uses the corresponding i-adjective.