[TraceWoodgrains]

This is mostly a definition game using "intelligence" to mean "reaching the peak of a narrow skill." That sort of peak takes a tricky-to-nail-down combination of innate ability, practice, and environment to reach. When people are talking about IQ, they use the word intelligence to describe, essentially, fluid problem-solving and reasoning aptitude. A lot of disagreement in this domain can and should be resolved with clearer terminology.

IQ says little about the specific skills someone has trained, so more specific tests are useful for that, but it provides a lot of information on the general aptitude it is intended to assess.