Gnomish
lest
noun. gathering, assembly, concourse, moot
faroth
noun. boundary
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.
A word in the Gnomish Lexicon of the 1910s glossed “gathering, assembly, concourse, moot” (GL/53), likely based on the early root ᴱ√LESE “collect” (QL/53). Initially Tolkien marked lest as archaic (†) and the equivalent of (modern) G. glest of the same meaning, but this was marked through, as well as the appearances of glest elsewhere in the lexicon (GL/39). Thus it seems Tolkien decided lest was the normal (non-archaic) form of this Gnomish word.