falling, similar, there all potentially bad but (i think this is an option question) i think gymnastics could be more dangerous bacuse of the flipping.
Cheer leading, dancing, and gymnastics are similar sports, which makes sense that you can gain similar injuries from them. I few might include breaking or spraining bones in your arms, legs, shoulders, or feet. This is because each of these include lots of movement, especially in these areas. One could argue that injuries can be worse for cheer leading, since lots of the time people fall from higher places. It isn't a fair argument however, since it depends on how much the person cares about the sport, as well has how they are injured.