The prefix "azo-" is commonly used in chemistry and biology, where it refers to a group containing two nitrogen atoms that are connected by a double bond. However, there are also several synonyms for this prefix that are used in different contexts. For example, the term "diaz-" is often used in pharmaceuticals to describe a compound that contains two nitrogen atoms, while the term "nitroso-" is used in organic chemistry to describe a compound that contains a nitrogen atom and an oxygen atom. Other related terms include "imino-" and "amino-", which both refer to compounds containing nitrogen atoms, and "azoxy-", which describes compounds that contain both nitrogen and oxygen atoms. Overall, these various synonyms help to clarify the precise chemical structure and properties of different compounds that contain nitrogen atoms.