Quenya is the fictional language J.R.R. Tolkien based partly on Finnish and associated with the Elves of Valinor. Tolkien developed it as part of a family of Elvish languages, giving it grammar, vocabulary, sound patterns, and a long internal history.
Quenya is linked especially with the High Elves, including the Ñoldor and the Vanyar. It functions in Tolkien’s stories as an ancient, formal, and literary language, while Sindarin is more commonly used in many everyday interactions among Elves in Middle-earth. The relationship between the languages reflects Tolkien’s interest in historical linguistics and language change.
Tolkien did not invent Quenya as a random collection of fantasy words. He revised it repeatedly across decades, drawing inspiration from Finnish, Latin, Greek, and other languages. It is important to distinguish Quenya from Sindarin: both are Elvish languages, but their histories, sound systems, and narrative roles differ. The question’s reference to Valinor points specifically toward Quenya’s association with the Blessed Realm.