What are the differences between self-tapping and self-drilling screws, and which type is more suitable for your specific project needs?

Self-tapping screws have a sharp tip that can cut its own threads into the material, while self-drilling screws have a drill bit tip that can create a hole before threading. Self-tapping screws are better for softer materials, while self-drilling screws are more suitable for harder materials. Choose self-tapping screws for wood or plastic, and self-drilling screws for metal or concrete.