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.
norn
noun. ?wheel, [G.] wheel
gorw
noun. oak
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 appearing as G. norn “wheel” in the Gnomish Lexicon related to G. nor- “run, roll” (GL/31), and thus likely derived from the early root ᴱ√NORO “run, go smoothly, ride, spin, etc.” from the contemporaneous Qenya Lexicon (QL/67). ᴱN. norn also appeared in Early Noldorin Word-lists of the 1920s, but there it was untranslated (PE13/151).
Neo-Sindarin: The root √NOR was associated with both “run” and “roll” as late as 1948 (PE22/127), so I would retain ᴺS. norn “wheel” for purposes of Neo-Sindarin.