# Merge Cytoscape allows for merging of both network and table data, through **Tools → Merge**. ## Merge Networks The **Advanced Network Merge** interface is available from **Tools → Merge → Networks...** and allows for merging of two or more networks.  ### Basic Operations - Select either **Union**, **Intersection** or **Difference**. - Networks available for merge are listed under **Networks to merge**. Select a network from the list and click the right arrow to transfer the network to **Selected networks**. Click **Merge** to continue. The merged network will be displayed as a separate network. ### Advanced Options The **Advanced Network Merge** interface includes an expandable **Advanced Network Merge** panel, where you can specify the details of how to merge the networks. The options available here are: - **Matching Columns**: This specifies the network columns that should be used for merging. Typically, the **name** column or some other column containing identifier information is used here. - **How to merge columns**: A table lets the user specify for each of the individual network columns, what the corresponding column in the merged network should be named and its data type.  ## Merge Tables It is also possible to merge tables, via **Tools → Merge → Tables...**:  Merging of node and edge tables works similarly to network merge, and tables can be merged within or between network collections.