polish · research

1. Origins, structure, and basic meaning

• Structure: 研 has 9 strokes and concerns sharpening or polishing and studying something closely.
• Basic usage: 研ぐ is read とぐ, and 研究 is read けんきゅう.

2. Common pitfalls and similar expressions

• Sharpening and research
  • 小刀を研ぐ means to sharpen a small knife.
  • The past form of 研ぐ is 研いだ.
  • The 研 in 研究 is read けん.
  • 海の生物を研究している means is researching marine life.