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.
elt
noun. change
elt
noun. dig, poke (probe), tug, lug
cwenn
noun. Elf
bart
noun. change
engan
noun. spear
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 word given as G. elt “a change” in the Gnomish Lexicon of the 1910s, originally given as elt “a dig, a poke (probe), a tug, lug” (GL/32). I suspect the original gloss was based on the early root ᴱ√ELE “drive, push, thrust, send forth” (QL/35).