Good and Well : Good and well are also confusing words. Most students think that these are same in usage, but this is not true. Good is an adjective which is used to modify Nouns or pronouns the good boy. On the other hand, 'Well' is an adverb which is used to modify a verb (he listens well) or an adjective(the well-educated boy. Hard and Hardly : Hard and hardly look like similar words but both have entirely different meanings. Hard is an adjective which means 'with a great deal of effort. Hardly is an adverb which means 'very little' or scarcely. • I work hard.' • I hardly work' Observe that these two sentences are entirely different in meaning.