1. Used to introduce a piece of information or an opinion that adds to or supports the previous one. English = furthermore, additionally, in addition.
2. Used immediately after a question sign (e.g., 'who' or 'what' or ‘where’) to ask the same question a second time, but this time about something, someone or somewhere different (e.g., 'Who else?’ or ‘Who in addition?’). English = else, in addition.