<Snipped quote by hatakekuro>
No, I've seen screenshots. The wiki even talks about a named Nopon
http://xenoblade.wikia.com/wiki/Nopon_(X)
The wiki also mentions that "It is not known if the Nopon in Xenoblade Chronicles X have any connection to the Nopon from Xenoblade Chronicles."
The world in Xenoblade Chronicles (first game). Takes place on two massive titans on what seems (and could be) an endless ocean.
Xenoblade Chronicles X (latest game) takes place after Earth was destroyed, humanity retreated ,and crash landed on an alien world. Also, I guess it's a good thing that they were lucky enough to crash into a planet that they can breath in lol
But ya, they're both in different "universes". I'm putting quotes there because the end of Xenoblade Chronicles has a really big spoiler.