消息 is aways used in untypical ways, you can hear it from other people.and maybe it's not true 新闻 means news.

Simply, general xiao1xi1(消息)>xin1wen2(新闻),消息means message,information,新闻means news.

消息这个词比新闻的意义更为广泛，用起来非常通俗，新闻这类词是专门用于媒体之类的东西，一般只在广播、电视、报纸、杂志网络上使用，新闻这个词只在正式文本中使用。消息也比较随便！

新闻：the imformation you get recently, maybe it is not ture. 消息：a kind of news. just short news.

消息是新闻的一个种类