Renaming 'Friends' to 'Following'

I wanted to rename the 'friends' to 'followings' as I believe this would be more approprite for my elgg site. I have renamed some language files and in all the sections the renaming has been successful.

But, when someone 'follows' another user, the notification message says 'USER NAME has added you as a friend'.

Now, could anyone please tell me how to rename this as well?