1. Noun (a person, place, or thing): I love MONA; I live in California; That is my PENCIL. 2. Paris is a BEAUTIFUL city. ("beautiful" = an adjective, which describes Paris.) The cake is DELICIOUS; The DELICIOUS cake was very popular. As you can see, an adjective describes something. 3. You speak English WELL. ("well" is an adverb, for it describes HOW you speak.) Please speak SLOWLY. An adverb describes HOW you do something. ***** Can you identify the following capitalized words as a noun, or an adjective, or adverb? MONA studies ENGLISH in LONDON. She lives in a NICE HOUSE. She cooks BADLY. Mona = noun. English =noun. London = noun. nice = adjective. house = noun. badly = adverb. ***** This was just a very, very brief introduction. You need a good book for a complete explanation. You can also find many good explanations on the Internet.