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.

Gnomish

nybol

adjective. ?snowy

A word appearing in the label of a heraldic devise G. Tram Nybol from the 1910s (PE13/94). The element G. tram means “bridge” (GL/71), but the meaning of the second element is unclear. Gilson, Welden, Hostetter and Wynne suggested it might be an adjectival form of G. nib “snow” (GL/60) and thus with the sense “✱snowy”, but they also noted that this meaning seems inappropriate to the situation (PE13/94).

tram nybol

place name. Tram Nybol

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.