• 技術ぎじゅつ — technology / technique
• 手術しゅじゅつ — surgery
• 芸術げいじゅつ — art
• 武術ぶじゅつ — martial arts
• 医術いじゅつ — (traditional) medical art
• 忍術にんじゅつ — ninja techniques
• 術後じゅつご — postoperative
• 術式じゅつしき — surgical method / procedure

The character 術 originally referred to narrow paths or routes through a field, and later extended to mean “methods” or “ways of doing things.” It’s now widely used in academic, technical, and artistic contexts. From 手術 (surgery) to 忍術 (ninja techniques), it signifies specialized knowledge or practice in a field.