Can I change and replace words or phrases that appear on pages and other areas of the UI?

Yes, you can use the User Interface Text tool to change text that appears on application pages. For example, you can change field names, page titles, help text (not links) that appear in help windows or menu labels on the Navigator and home pages and so on.

Note: To use the User Interface Text tool, make sure you've the Manage User Interface Text (FND_MANAGE_USER_INTERFACE_TEXT_PRIV) privilege.

You can also use this tool to change or translate multiple strings at the same time and you can export your strings to make your changes offline. See Modify Text Using User Interface Text Tool for more about the User Interface Text tool.