Definition
"Upper-level" describes something situated at or pertaining to a higher level, whether physically or metaphorically. Think of the top floor of a building 🏢 or advanced courses in school 📚. It implies complexity, expertise, and a degree of difficulty beyond the basics. It's not about just being high up, but also about advanced knowledge and skills. Unlike introductory or lower-level concepts, upper-level matters usually require deeper understanding and critical thinking.