Average power refers to the mean power delivered over a specific time period, while composite power combines multiple signals or frequencies to provide a broader measurement of power in a system. The discussion highlights the importance of understanding these concepts for accurate RF power measurement, particularly in applications involving complex signals. Research indicates that average power is often used for continuous wave signals, whereas composite power is more relevant for modulated signals with varying amplitude. Participants share insights on measurement techniques and equipment used to assess both types of power effectively. Understanding these differences is crucial for optimizing RF system performance and ensuring compliance with regulatory standards.