I want to know the answer to the following question:
What is another way to refer to an antennas gain?
All the background I'm provided with is that "The antenna gain, or power gain of an antenna is defined as the ratio of the intensity (power per unit surface area)  radiated by the antenna in the direction of its maximum output, at an arbitrary distance, divided by the intensity  radiated at the same distance by a hypothetical isotropic antenna which radiates equal power in all directions.". Is that enough to answer the question?
Answer: yes