A node is a special coordinate position in space. Nodes are saved with a model.
When modeling, you typically create nodes and then use nodes to create curves and regions.
Nodes take on special significance when you assign attributes to them. For example, you might assign an injection location, a coolant inlet, a constraint, or a load to a model node.
When you mesh a model, model nodes are converted to mesh nodes and additional mesh nodes are generated.
Mesh nodes are the vertices of triangular and tetrahedral mesh elements and the ends of beam elements.
When you run an analysis, certain results are recorded at mesh nodes.
The graphic below shows mesh nodes at the vertices of a triangular element and a beam element.