Green beer is really any flavor experience that you have that you are not happy with that may be present in the first few weeks of the beer's life that is gone when the beer is fully matured, a few weeks later.
The chili/spaghetti analogy is a good one.
It really can be any number of flavors, many of them are the same ones that are on those "off flavor charts." The only real difference is that they will go away with time.
That's why I say don't sweat any flavor or aroma that you experience from yeast pitch day til its been about 8 weeks in the bottle. Then if the beer still has that, you can look at the causes of it from those charts. But still radically sometimes walking away from a beer for 6 months to a year before deciding to dump it, the beer can end up being OK....
Describe Green Beer.