Node names are displayed above the node, allowing you to easily view long node names.
Even if you are zoomed out, you can easily view your node names.
Tip: You can also hide the node names. See Hiding the node names in the Node Editor for more information.
Hiding namespace of node names
You can also refrain from displaying the namespace of your node names so that they appear shorter. Disable Display > Show Namespace so that the namespaces do not appear with your node names. For example, Namespace1:pConeShape1 becomes ...:pConeShape1.