Again, many of the considered safety features of the furniture will vary depending on your child's age.
If you are checking out age-appropriate sets from a reputable company, then they will likely be designed in compliance with the Children's Furniture standards as set out by ASTM. These rules ensure that they meet appropriate safety standards. You can learn more about this.
In terms of age variations, soft-surfaces, child-friendly material, and round edges are all necessary considerations when buying for young children. These all help to avoid the possibility of injuries occurring.
Silicone corner protectors can additionally be used to ensure there are no sharp edges on the furniture. These may also be a good idea for older children who like to rush around or to play rough.
When deciding to opt for either bunk beds or a loft bed, aim not to go for ones that are not too high. This can mean it is harder for your child to access the top bunk, and it also makes it more dangerous if your child was to accidentally fall out.
It is also good to ensure you select a bunk or loft bed with appropriate safety bars. They should be placed close enough to ensure that your child will remain safely in their bed all through the night.