The individual Assets
You will find a variety of included Assets in the Asset Browser, which you can use to create materials as well as polygonal objects, for example.
All assets are divided into different categories. The subsections follow this division. Note that you can also create categories yourself and populate them with your own Assets.
Note that some Nodes work the same in the different modes of the Node Editor - which, after all, cover different functional areas - such as the Nodes from the Math category. Other Nodes, on the other hand, may only make sense to use in conjunction with Scene Nodes and not with materials. The Asset list is therefore automatically filtered depending on the active Mode setting of the Node Editor, so that only the Nodes functioning in the current Node Editor mode can be selected.