Hi Daniela,
Yes! There are a few places you will want to make updates.
First, the menus - for example, the Browse menu. You can easily change the labels on these by going to Admin > Menus, finding the authority record node (nested under the Browse menu), entering edit mode, and updating the label. See:
The other place you should make changes is in the user interface label settings. This will control the entity name text that appears below the result count on the authority record browse page, as well as the help text appearing in the dedicated search box. Navigate to Admin > Settings > User interface labels, and update the actor labels:
There may be a few places where the label is hard-coded - if you find any, let me know and I can create a bug ticket for future reference. In most cases, if these exist, one workaround (until we address any missing labels via bug fixes) would be to override the current labels via a custom theme.