Tengwar is the fictional script created by Fëanor in Tolkien’s legendarium.
Within the history of Middle-earth, Fëanor devised the Tengwar, also called the Fëanorian characters. The script was designed to represent the sounds of speech and was later adapted for several languages. It is particularly associated with Quenya and Sindarin, the major Elvish languages encountered in Tolkien’s writings.
Tengwar should not be confused with Quenya or Sindarin, which are languages. A script is a system of written symbols, while a language supplies the words and grammar those symbols represent. Tolkien’s own examples of Tengwar demonstrate that the writing system could be used for different tongues.
Cirth is another Tolkien writing system, characterized by angular runes and associated especially with the Dwarves. Sarati is an older script attributed to Rúmil. These related names make script questions difficult, but the Fëanorian association identifies Tengwar specifically.