No, these are not just different ways of skinning the same cat, the meaning is quite different. The word "good" is a noun, indicating what will be done. The wo

No, these are not just different ways of skinning the same cat, the meaning is quite different. The word "good" is a noun, indicating what will be done. The word "well" is an adverb, and describes how something will be done. In a contrived example, a sentence like "the raping and pillaging invaders did well" is grammatically and semantically correct (they achieved their goal by getting lots of gold, etc.). A similar sentence "the raping and pillaging invaders did good" is grammatically correct, but the semantics are probably not what you want (they didn't do good, they did evil).