You may want to rename tools for organization, but the best use for this is when you're referencing a specific tool that needs to be triggered (via click or hover) from the interactions sidebar.
To find the name of a specific tool and/or rename it, simply click the tool and head to the bottom left corner of the studio. The selected tool will be highlighted in blue.
Note: This does not show all your tools across the tour, and it does not show all the tools on the screen you're on. It only shows the tools that are in the active view (tabs at the top of your screen).
To rename them, simply click on the text, and type something new!