Gnomish
naugla
adjective. of or belonging to the dwarves
naugli
noun. dwarf
naug
noun. dwarf
nauglath
collective name. Dwarves
nauin
adjective. dwarf
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.