With the current classification by Imperial Household Agency, graves for the emperor and the imperial family, such as the empress, the grand empress dowager, and the empress dowager are called mausoleums while those for others such as the crown prince and the imperial prince are known as graves.
現在の宮内庁による区分では、天皇・皇族の墓のうち、天皇・皇后・太皇太后・皇太后のものを陵（みささぎ・りょう）、それ以外の皇太子や親王などの皇族のものを墓（はか・ぼ）と呼ぶ。