Height
The height of a node is the number of edges from the node to the deepest leaf (ie. the longest path from the node to a leaf node).
Depth
The depth of a node is the number of edges from the root to the node.
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[Height of a Tree Definition](height-of-a-tree-definition)
graph TD; A("h = 2<br/>d = 0") --- B("h = 1<br/>d = 1") & C("h = 0<br/>d = 1") B --- D("h = 0<br/>d = 2") & E("h = 0<br/>d = 2")