Gnomish
lind
noun. twine
dólin
noun. song
eilin
noun. pool
gwail
noun. air
nîn Archaic
noun. pool
sîr
noun. river
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.
An archaic noun in the Gnomish Lexicon of the 1910s glossed “pool” (GL/60), almost certainly derived from the early root ᴱ√NENE (QL/65).