Safety aid avoids/prevents injury in the first place, whereas first aid is needed to help injuries. If you didn’t have safety aid, a lot more people would get injuries. For example there may be a hazard of glass on a netball court, during safety aid the glass would be removed. If safety aid wasn’t used it would be very likely that someone would get injured and would need first aid, which could have been avoided in the first place by using safety aid.
