A word appearing in the Gnomish Lexicon Slips of the 1910s as {ŷr >>} hŷr “sun” beside a variant G. aur of the same meaning (PE13/114).
Gnomish
aur(a)
noun. Sun
galaduir
proper name. Sun
hŷr
noun. sun
uril Archaic
proper name. 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.
A noun in the Gnomish Lexicon of the 1910s appearing as Aur “Sun” (GL/20), probably a cognate of ᴱQ. Ûr from the root ᴱ√URU as suggested by Christopher Tolkien (LT1A/Ûr; QL/098). It appeared as aura in G. nalos·aura “sunset” and G. orosaura “sunrise” (GL/59, 62). The word G. aur “sun” was also mentioned in Gnomish Lexicon Slips with corrections for that document (PE13/114), but by The Etymologies of the 1930s, N. aur meant “day”, whereas N. Anor became the name of the Sun (Ety/ANÁR, AR¹).