Indris, also known as Indriidae, are a family of primates found only in Madagascar. The word "indris" is commonly used to refer to the entire family, but there are several other synonyms that may also be used. These include the word "babakoto," which is a Malagasy term that refers specifically to the largest species of indris, Indri indri. Another synonym is "avahi," which refers to a genus of indris that are smaller in size and have long, woolly fur. Additionally, the word "sifaka" may also be used to refer to some species of indris, especially those with distinctive leaping movements. Overall, there are several different words that can be used to refer to the various species within the Indriidae family.