mountains and hills
Literary or formal term for mountains and hills collectively; not used in everyday conversation.
This region has many mountains and hills, and few plains.
Refers specifically to the tomb of an emperor or member of the imperial family; a formal, historical term.
The imperial tomb of Emperor Nintoku is in Osaka.
Compound of 山 (mountain) and 陵 (mound, imperial tomb). The 'mountains and hills' sense is a straightforward combination of the characters, while the 'imperial tomb' sense derives from the ancient practice of building large keyhole-shaped burial mounds.