What is the difference between narcotics and stimulants?

What is the difference between narcotics and stimulants? Is cocaine a narcotic drug?What is the difference between narcotics and stimulants?
Narcotic drugs are those substances that induce sleep. In the legal context, narcotic refers to opium, opium derivatives, and their semisynthetic or totally synthetic substitutes. But Cocaine and coca leaves, which are classified as "narcotics" surrounded by the U.S. Controlled Substances Act (CSA), are technically not narcotics but stimulants.
Some of the more popular narcotics drugs (in order of use popularity) are Heroin, opium, morphine, codeine, hydromorphone, meperidine, and methadone. Compared to some other drug types, narcotics use is easier to be detected by instant drug trialling and screening tests. If you suspect any substance to be of the narcotic temper and want to confirm, you can follow the link below
A narcotic dulls a character as a stimulants makes a soul hyper. cocaine is a stimulant.
caffeine & nicotine are stimulants. narcotics are codeine , methadone plus a few more that i can't think of right presently