Gnomish
avosaith
noun. avarice, money-greed, greed of gold
aus(s)aith
noun. avarice
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 has G. aus(s)aith or avosaith “avarice” based on G. avos “wealth” (GL/20). Elsewhere in this document avosaith was translated “money-greed” (GL/50). Gnomish Lexicon Slips modifying that document had avasaith or afasaith “avarice, greed of gold” (PE13/111). A final iteration of this word appeared in N. Cûm-nan-Arasaith “Mound of Avarice” from Silmarillion drafts of the early 1930s (SM/133), but this name was removed from later versions of the narratives.