Homonym: scab (Labor)
A "scab" is a protective crust that forms over a wound as it heals. This natural process occurs when the skin is injured, and blood cells and proteins work together to create a barrier. The scab helps prevent infection and allows the underlying tissue to regenerate. Over time, the scab will dry out and eventually fall off, revealing new skin underneath.
In a different context, the term "scab" can refer to a person who works in place of striking workers during a labor dispute. This usage is often seen in discussions about labor rights and union activities. The term carries a negative connotation among many workers and unions, as it can undermine collective bargaining efforts.