Microsoft has always been terrible at naming things.
Their word processor is called Word. Their sql server is called Sql Server. Their IM is called MSN Messenger/Windows Live Messenger/Messenger/Skype/Lync/Skype For Business/Teams
I'm not sure about Word, I think it's not such a bad name and it's pretty much a synonym for 'text editor' at this point, not sure you can do much better than that. Certainly not a worse name than 'Writer' (sounds a bit clunky), maybe on par with Pages.
Their word processor is called Word. Their sql server is called Sql Server. Their IM is called MSN Messenger/Windows Live Messenger/Messenger/Skype/Lync/Skype For Business/Teams