Qenya
úrin
proper name. Sun, (lit.) Fiery
anar
noun. Sun
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
An earlier Quenya name for the Sun appearing in Silmarillion drafts from the 1930s and glossed “Fiery” (LR/240). It was sometimes used in combination with its other name Anar: Úr-anar “Red Sun” (LR/72). In a deleted entry in The Etymologies, it was given as a derivative of the root ᴹ√UR “be hot” (Ety/UR).