We usually say,
Windows 10 has been launched.
Why can't we say,
Windows 10 has been inaugurated.
Question 1: If we can, then why are there two different words for exactly the same thing. In other words why do exact synonyms exist?
Question 2: If we can't then what is the difference between inaugurated and launched? In which situation do we use inaugurated rather than launched. As user Random explained in his/her comments(1,2) sometimes inaugurated is used to imply that the thing being inaugurated has been tested first and then given for use. If possible please provide reference for this meaning. Also what kind of things are considered importantant so that they get inaugurated e.g. does a private hospital, private company, private shop, private mall/govt. mall, new version of Mercedes or some movement started by people or other things which are at the median of being governmental/political and private.
My Research effort: I looked in merriam webster dictionary and google translator but could not find the answer to my question.