1, well can be used as adverb or adjective, indicating health and satisfaction. Good is only an adjective, not an adverb, and its adverb form is well.
2. the usage difference between 2.well and good: Shehasagood (beautiful) voice. She has a good voice. ShespeaksEnglishwell。 She speaks English very well.
When Well is used for health, it can be said: Iamnotwelltoday or Iamnotwell. I don't feel well today.
4.Good is usually used by parents to describe things or praise children, such as thisisaogoodbook. This is a good chair.
Both 5.good and well can modify verbs. Generally, good is only used after semi-verbs, such as: seem, look, look, etc.
6.Good is generally used as a predicative after a semi-verb, and well is used as an adverbial after a substantive verb.