Newcastle disease virus (NDV), also known as avian paramyxovirus type 1, is a highly contagious viral infection that affects birds, particularly poultry. It can cause severe respiratory, nervous, and gastrointestinal symptoms, leading to significant economic losses in the poultry industry. When researching about NDV, it is useful to be aware of its numerous synonyms, as they might be utilized interchangeably in different scientific literature or discussions. Some common alternate terms for Newcastle disease virus include avian paramyxovirus, avian pneumoencephalitis virus, and avian rubulavirus. Familiarizing oneself with these synonyms can aid in acquiring a comprehensive understanding of NDV and its impact on avian health and the agriculture sector.