Coriander (or cilantro) and Parsley are both herbs from the same botanical family Apiaceae and used in cooking.
Coriander is also known as Chinese parsley. It is called cilantro in America. Heat diminishes the flavor of coriander leaves so is used at the end of cooking.
There are two types of parsley, Curly Leaf and the Italian Flat Leaf. Curly leaf parsley is usually used as a garnish for its bright green and pleasing appearance.
edit Culinary uses
Chopped coriander leaves are used in many Asian and Mexican dishes as key ingredient or garnish. It is a key ingredient in salsa and guacamole, also in Indian chutneys and sauces. The seeds can be dry roasted and powdered, and are used in Indian cooking (it’s a key ingredient of Garam Masala).
Parsley is a key ingredient of West Asian salads such as Tabbouleh from Lebanon; Gremolata, which accompanies veal stew; and Persillade, a mix of chopped garlic and parsley used in French cuisine. Parsley is also used as part of a bouquet garni (or bundle of various herbs) to flavor soups and stocks while boiling. Mainly used in European and American cooking as a garnish for food.
edit Effects on health
Coriander leaves and seeds are high in antioxidants. The chemicals from the leaves have antibacterial activity against salmonella. It can also delay or prevent from spoiling. It is a traditional treatment for diabetes. Also used in cold medicine for relief of anxiety and insomnia in Iran. Used in traditional Indian medicine as a diuretic by boiling equal amounts of coriander seeds and cumin seeds, then cooling and drinking the liquid. Coriander juice mixed with turmeric and applied on the skin is a treatment used for acne.
Parsley tea can be used as an enema and to control high blood pressure. Parsley is high in oxalic acid, a compound involved in the formation of kidney stones. It is not recommended to be consumed by pregnant women as it can lead to uterine stimulation and premature labor, but is recommended for lactating mothers as stimulates milk production.