The term "breed of dog" refers to a specific group of dogs that share common characteristics such as physical appearance, temperament, and behavior. However, there are numerous synonyms that could be used to describe a breed of dog. Some of the most commonly used synonyms include "canine breed," "dog breed," "purebred," and "pedigree." Other synonyms might include phrases such as "type of dog," "class of dog," or "family of dogs." Overall, these synonyms help to describe the wide range of dog breeds available and emphasize the unique and diverse characteristics that each breed has to offer.