Genus Petrogale is a group of marsupials commonly known as rock-wallabies. They are found in Australia and come in various species. Some synonyms for the term include rock wallaby, wallaroo, hill kangaroo, and short-tailed wallaby. Each of these terms refers to a specific species of the genus. The rock wallaby, for example, belongs to the Petrogale genus and is known for its agility and ability to climb steep rocky terrains. Hill kangaroos, on the other hand, are larger in size and are most often found in grassy plains and open forests. Overall, these synonyms refer to the same group of marsupials that have unique adaptations to thrive in their natural habitats.