粗い

1. Origins, structure, and basic meaning

• Structure: 粗い is read as あらい and is an い-adjective meaning rough in texture or coarse and open in spacing.
• Basic usage: Texture appears in 表面が粗い, while an open mesh appears in 目の粗い網.

2. Common pitfalls and similar expressions

• Spelling versus 荒い
  • The homophone 荒い suits rough behavior, speech, or waves; 粗い describes texture, particles, workmanship, or loose spacing.
• Two related senses
  • Context distinguishes an uneven surface from a structure whose elements are spaced too far apart.