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.
uru
noun. fire
(uru)purnie
noun. conflagration
auro
noun. sun
sá
noun. fire
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).
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.
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).