An adjective like correct or perfect is used to describe a noun or pronoun. An adverb is used to describe a verb, an adjective, or another adverb. Adverbs often answer the question "How was it done?" The sentence is correct. Sentence = noun Use the adjective: correct She said it correctly. How did she say it? Say = verb Use the adverb to describe how the verb was done: correctly The apple is perfect. You picked the apple perfectly.

ADEJCTIVES Adjectives in English describes nouns. 1. Adjectives often go after the verb BE: My shirt is red. (noun + be + adjective) 2. Adjectives often go before nouns: I have a red car (adjective + noun) ADVERBS Adverbs are words that modify (or describe) a verb, an adjective, or another adverb. Types of adverbs: 1. Adverbs of manner. (HOW?) 2. Adverbs of place. (WHERE?) 3. Adverbs of time. (WHEN?) 4. Adverbs of frequency. (HOW MANY TIMES?) 5. Adverbs of degree. (HOW MUCH?) 1. Adverbs of manner provide information on HOW someone does something: He speaks slowly. He work well. She speaks English beautifully. 2. Adverbs of place tells us the place WHERE something happens: She is running outside. He is running inside. Please sit here. 3. Adverbs of time tells us something about the time that something happens: I want it now. He came yesterday. 4. Adverbs of frequency answers the question HOW MANY TIMES? She is always honest. I have often wondered how they did that. I can sometimes go without food for days. 5. Adverbs of degree tells us the degree or extent to which something happen: Marry is very beautiful. He drove quite dangerously.

thanks

My limited experience of commonly used English, especially American-influenced English is that adverbs have all but disappeared; adjectives being used in all cases. Even in official signs. Some seem almost arguable, make me shudder. Drive safe. My work mate, who worked for years in Florida claims to have never heard them say "well" preferring "good" for all occassions. Study well. :)

Like kat said you would use the adverb to describe the verb "defined" so the adverb "correctly" would be the right answer for the second the answer "noun" is described by the adjective "correct" and that is the right answer for that one.