Homonym: filament (Thread)
A filament is a thin, thread-like structure that can be found in various contexts, such as in light bulbs or biological organisms. In light bulbs, the filament is typically made of tungsten and produces light when an electric current passes through it, heating it to a high temperature.
In biology, filaments can refer to structures like those found in cells or fungi, where they serve important functions such as support or nutrient absorption. For example, mycelium in fungi consists of a network of filaments that help the organism grow and thrive in its environment.