An instructor is someone whose job is to teach a specific skill or subject. While teachers work in schools covering many topics over a school year, instructors typically focus on teaching one particular thing: a swimming instructor teaches people how to swim, a ski instructor teaches skiing, and a driving instructor teaches teenagers and adults how to operate a car safely.

The word emphasizes the practical, hands-on nature of the teaching. Instructors don't just explain things from a book; they demonstrate techniques, watch you practice, and give feedback to help you improve. A martial arts instructor shows students how to execute kicks and blocks correctly. A piano instructor sits beside students at the keyboard, helping them master difficult passages.

You'll find instructors in many places beyond schools: gyms, community centers, military training facilities, and workplaces. Flight instructors teach pilots how to fly. Yoga instructors guide students through poses and breathing exercises. The term suggests someone with real expertise who can break down complex skills into steps you can actually learn and practice until you get them right.