Apart from sensitivity and selectivity, which of these is the third main indicator of communications receiver performance?

A high-quality communications receiver is generally evaluated on three primary performance characteristics: sensitivity, selectivity, and dynamic range. Sensitivity is the ability to hear very weak signals, and selectivity is the ability to separate a desired signal from adjacent interfering signals. Dynamic range is the receiver's ability to handle very strong signals without overloading the front-end components, while simultaneously being able to hear weak signals. Distractors like fidelity (accurate audio reproduction) or frequency range (the bands the radio covers) are features or specifications, but they are not considered the core performance indicators of a receiver's RF architecture.