Safety glass is glass that has extra safety measures that make it less likely to shatter or pose a hazard if it does break. Toughened glass and laminated glass are two common styles.
Toughened glass is more resilient and tougher than regular glass, and it crumbles into small granular fragments rather than splintering into jagged pieces when shattered. The granular chunks have a lower risk of causing damage.
As laminated glass breaks, it is kept together by a laminated interlayer, which is sandwiched between two or three layers of glass and keeps it from shattering. And when fractured, the interlayer binds the glass layers together, and its high strength protects the glass from shattering into big sharp fragments.
Protection glass should be used to replace low-level glass panels and glass doors in your home or company, bringing it up to code.