What's the difference between
I always use
instabil, but hear other people also use
unstabil was wrong, but Duden has an entry for it: http://www.duden.de/rechtschreibung/unstabil
Duden has also an entry for
Some Internet sources say that
unstabil is used for "unstable constructions / buildings" but I feel like
instabil goes perfectly well in that context, too.
Can anybody shine a light on the differences in connotation if there are any?
If you enter
unstabil into Google, Google's "Did you mean" feature suggests
Also, Google Trends says that
instabil is used way more often: http://www.google.com/trends/explore#q=instabil%2C%20unstabil&cmpt=q