An early Qenya word for the Sun appearing in a word list from the 1920s (PE15/77). Its etymology is obscure.
Early Quenya
uru
noun. fire
(uru)purnie
noun. conflagration
auro
noun. sun
ahúra
noun. Sun
sá
noun. fire
sári
proper name. Sun
A name for the Sun in the earliest Lost Tales (LT1/186), probably a derivative of the root ᴱ√SAH(Y)A “be hot” as suggested by Christopher Tolkien (LT1A/Sári).
tan(y)a
noun. fire
An element meaning “fire” in some early names: tanya in ᴱQ. Tanyasalpe (LT1/187), tana in ᴱQ. Tana Qentima equivalent of G. Tôn a Gwedrin “Tale-fire” (PE15/7; LT2/197), and possibly also in ᴱQ. Fatanyu “Hell” (GL/51). Tan(y)a is likely a derivative of the early root ᴱ√tan- (GL/69, 71).
A noun appearing in Early Noldorin Word-lists as {ūru >>} auro, cognate of ᴱN. úr “sun”, and derived from {✶ourǝ >>} ✶ourū̆ (PE13/155). Elsewhere Q. Úr(in) was a name for the Sun from the 1910s up through the 1950s, but Tolkien eventually changed this to Vása (MR/198).