Besides being an adjective, well has many other uses. For example, as an adverb, it can be used to modify verbs or adjectives, meaning "very good and sufficient" For example, "well done" means "well done"; "He is famous for his kindness" means "He is famous for his kindness"; Another common usage is well-being, which means "health and happiness" For example, "We care about your well-being and hope you have a good life" means "We care about your health and happiness and hope you have a good life".
In addition to basic usage, well can have different meanings in different contexts. For example, in greeting, well can mean "Are you all right?" For example, "Well, how was your day?" You can also use well to express such emphasis as "Oh dear", for example, "Well, I never expected to see you here!" In a word, understanding the various meanings and usages of well can help us learn and use English better and improve our language expression ability.