"GOOD" and "WELL"

"Good" is an adjective. "Well" is an adverb. Ex.: The food tastes good. She speaks English well.

"IMPLY" and "INFER"

"Imply" means to suggest indirectly. "Infer" means to deduce or conclude from evidence. Ex.: Her silence seemed to imply disapproval. From her reaction, we can infer that she is unhappy.