A node in a tree that is descended from the same immediate ancestor(s) as other processes or nodes. The node may represent any data structure, or a system object such as a window or a process.

Windows that have the same parent window.

The siblings of a given peak have the same topographic parent. It is a useful term for discussing whether or not a higher peak is the parent or merely a sibling. For example, when talking about the prominence of Diamond Head, Atwell Peak is just a sibling, not the parent peak. The parent is Mount Garibaldi, becuase unlike Atwell, it has a contour line that surrounds Diamond Head.

A procedure with the same parent as the given procedure.

an element occurring at the same level in the tree

In an XML structure, an element at the same level as another.

A child member at the same branch level.

A term that shares the same broader term (one level higher) as other terms.