There are several synonyms for the term "noise barrier" that can be used depending on the context in which it is being used. Some of the synonyms include sound barrier, noise abatement wall, acoustic fence, soundproof wall, and noise insulation barrier. These terms refer to physical structures used to mitigate the effects of unwanted noise in an environment. Noise barriers are commonly used in urban areas to reduce the amount of traffic or other external noise that may disturb the peace of people living or working nearby. Regardless of the term used, the main objective of a noise barrier is to reduce or block unwanted noise.