Speedcubing vs cubing: what is the difference?
Cubing is the broad hobby of solving twisty puzzles. Speedcubing is the performance-focused part of cubing where solve time, consistency and competition matter.
A cuber may enjoy collecting puzzles, learning unusual solving methods or solving casually. A speedcuber trains to reduce solve time while keeping the solve accurate. The same person can be both.
For a beginner, the important shift is not to chase a world-class time immediately. First become comfortable solving without help. Speed comes after repeatability.