Adjective: A word that describes, identifies or qualifies a noun or pronoun. An adjective usually, but not all the time, comes before the noun or the pronoun which it modifies.
For example:
The cute cat was sleeping.
The cat was cute. The word "cute" is describing and modifies the noun cat.
Adverb: An adverb is a bit more flexible because it describes or modifies a verb, adjective, or another adverb. Unlike an adjective, an adverb can be found in various places within the sentence. Adverbs are most likely to end in "ly" (but not always). An adverb indicates manner, time, place, cause, or degree and answers questions such as "how," "when," "where," "how much".
For example:
The dog quickly ran to his owner. The word "quickly" describes and modifies the verb ran. It also answers the question "how". How did the dog run? It ran "quickly".
