Utility fog is a term that's not commonly used in general conversation. It refers to nanobots that can combine in a three-dimensional network to create a synthetic material that has unique qualities. Synonyms for utility fog include smart dust, programmable matter, and nano fabric. The concept of utility fog remains in the realm of science fiction, but it has potential uses in engineering and medicine. Smart dust is a technology that uses tiny sensors to monitor environmental conditions and can be used in military and surveillance applications. Programmable matter is a futuristic technology that can change its shape and properties on command. Nano fabric is a material that can also shape-shift and adapt to different conditions.