Adverbs

(1) good vs well
Only well can be used as adverb. Good is always an adjective.
good refers to morality of quality and well refers to health.
eg I feel good about my work.
I am doing well.( means I am fine and in good health.)

Use like before noun or pronoun
Use as before a clause, adverb or prepositional phrase.
Use as if/as though before a clause.