1. Sustained stability: Excellence not only refers to good performance in a period, but also represents sustained stability. In other words, excellent performance is not only a one-time achievement, but also a state of excellent performance on many occasions and many times. This continuity and stability are not good. For example, an athlete who performs well, only occasionally, but performs well and stably can be regarded as an excellent athlete.

2. Higher quality: Excellence means that the performance in one or more aspects has reached a very high level, even reaching the top level. In terms of relevant indicators or standards, it is better than good. For example, in the academic field, excellent papers should not only meet academic requirements, but also be deep and innovative. In contrast, a good paper only meets the basic standards.