I had a client recently who needed to include a Glossary in their Storyline eLearning course. Fortunately, this kind of functionality is simple to add to any Storyline project.
To begin, open or create a Storyline project. Click Player (located in the Publish group on the Ribbon). From the Data area of the Properties, click Glossary and then from the bottom left of the dialog box, click Add.
In the Glossary Term dialog box, type a Term and Definition. When finished, click the Save button. Repeat the process as necessary.
The final step is telling Storyline that you want the Glossary to appear in the published lesson. From the top of the Player dialog box, select Features. From the list of Player Tabs, select Glossary.