Genus Iridoprocne is a group of birds that belong to the family Hirundinidae. They are also known as rainbow swallows due to the colorful plumage they possess. There are no direct synonyms for the word Genus Iridoprocne since it is a taxonomic classification. However, some other similar bird species belonging to the same family Hirundinidae are commonly referred to as swallows, and they may be grouped together with Genus Iridoprocne based on their physical characteristics and habitat. Some common synonyms for the general term "swallow" include swifts, martins, and sand martins. These birds are all well-known for their aerial acrobatics and their ability to consume large quantities of insects.