Gnomish
gwidhin
noun. woof
gwinn
noun. net
gwith
noun. net
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.
The Gnomish Lexicon of the 1910s had G. {gwind >>} gwidhin “woof” and G. gwist “weft” based on the early root ᴱ√gu̯iđ (GL/46).
Neo-Sindarin: This early root fell out of use in Tolkien’s later writings. The Etymologies of the 1930s had ᴹQ. lanat “weft” under the root ᴹ√LAN “weave” (Ety/LAN), so I’d coin a word ᴺS. lanad “weft, woof” to replace the probably-abandoned Gnomish words.