1) Иван - мой сосед. =Ivan is my neighbour (and not a friend or a brother). The question you're asked would be: - Кто Иван? (Who's Ivan?) 2) Мой сосед - Иван. = My neighbour is Ivan (and not Anton or Victor). The question would be: - Твой сосед Антон или Иван? (Is Anton or Ivan your neighbour?) So, you put in the end of the sentence the most important information, the answer to the question you're asked.

Ivan is my neighborhood-Иван мой сосед. That's right. (Only if it's a full sentence.) Мой сосед иван - used only if there is a sequel. For example: Мой сосед иван любит петь. Мой сосед Иван играет футбол. etc

you just have to remember one thing , there is absolutely no strict word order in Russian. )))

i'm confused that order to write sentence in Russian