Quenya is the fictional language J.R.R. Tolkien created for the Elves of Valinor and used extensively in the mythology of Middle-earth. Tolkien modeled parts of its sound and structure on languages including Finnish, Latin, and Greek.
In Tolkien's linguistic history, Quenya was associated especially with the Noldor and with the older, formal culture of the Elves. It remained a language of lore and ceremony in Middle-earth, while Sindarin became the more widely spoken Elvish language among many Elves in Beleriand and later regions.
Quenya and Sindarin are sometimes treated as interchangeable because both are Elvish languages, but Tolkien gave them different histories and linguistic relationships. Names such as Eärendil, Galadriel, and Númenor draw on Tolkien's invented languages, though their exact linguistic forms can vary across drafts and published texts.