An incantation or enchantment is a charm or spell created using words. An incantation may take place during a ritual, either a hymn or prayer, and may invoke or praise a deity. In magic, occultism, shamanism, and witchcraft it is used with the intention of casting a spell on an object or a person. The term derives from Latin "incantare" (tr.), meaning "to chant (a magical spell) upon," from in- "into, upon" and cantare "to sing".
In medieval literature, folklore, fairy tales and modern fantasy fiction, enchantments (from the Old French "enchantement") are charms or spells. The term was loaned into English since around AD 1300. The corresponding native English term being "galdr" "song, spell". It has led to the terms "enchanter" and "enchantress", for those who use enchantments.
The weakened sense "delight" (compare the same development of "charm") is modern, first attested in 1593 (OED).
In traditional fairy tales or fantasy fiction, an enchantment is a magical spell that is attached, on a relatively permanent basis, to a specific person, object or location, and alters its qualities, generally in a positive way. The most widely known example is probably the spell that Cinderella's Fairy Godmother uses to turn a pumpkin into a coach. An enchantment with negative characteristics is usually instead referred to as a curse.