Pecking order is a commonly used term, especially when referring to the hierarchy in social groups. However, there are several other terms that can be used interchangeably with pecking order. Dominance hierarchy is another synonym frequently used to describe a social hierarchy in animal groups such as chickens or primates. Similarly, rank order, power structure, and social ladder are other terms that convey similar meaning as pecking order. Another synonym for pecking order is chain of command, which refers to hierarchical structures in the military or corporate world. All these terms are used to explain the structure of a group or organization wherein individuals are ranked or ordered based on their power, authority, or dominance.