…or so goes the saying. “Well” and “Good” are often confused. Here’s a pretty (ahem) good example of correct usage, thanks to Flo and Friends.
Here’s the short version of the rule:
Good is an adjective. It describes things.
Well, is an adverb. It tells how.
And of course, as with many rules in English, the rule has exceptions.
Well is an adjective when you’re talking about health.
Good is a noun when you’re talking about morals.
So there you have it.