These areas are actually quite similar to each other, however, fitness is much more complicated and requires a coach at the initial stage of control. Fitness is the best way to adjust your figure, but aerobics is more aimed at maintaining health, including lungs. The set of exercises in these areas is also different.
Fitness is a more comprehensive direction, designed not only to correct the figure, but also to improve health, to comply with the rules of a healthy lifestyle. The task of shaping is to correct the shape. Fitness can be practiced by both men and women, and shaping is intended exclusively for the fair half of humanity.