Gnomish
fûn
noun. hoard
fufuin
noun. hoard
fuis
noun. hoard
fund
noun. hoard
fô(tha)
noun. hoard
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.
There were various words for “hoard” in the Gnomish Lexicon of the 1910s, all based on the early root ᴱ√foχo and related to ᴱQ. foa “hoard, treasure” (GL/36; QL/38). Of these, only G. fuis and G. fûn were retained, the latter with a variant fufuin. Tolkien had fû “hoard”, but this was revised to fuis. Tolkien also had {fûl >> fund >>} fûn, and {fûlin or fûlim >>} fûn. On another page he had G. fô or fôtha “a hoard”, but these were revised to G. fô “snow” and G. fôtha “it snows” respectively (GL/35). Before their change in meaning, these last two were connected to (rejected) G. fâ- “have, hold, possess” (GL/33).