Early Quenya
tundo
noun. firewood, fuel
tunda
noun. hole
ambo
noun. hill
amun Archaic
noun. hill
oro
noun. hill
oron
noun. hill
sat
noun. hole
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 noun in the Qenya Lexicon of the 1910s given as ᴱQ. {tunda >>} tundo “firewood, fuel” and derived from the root ᴱ√TUŘU [TUÐU] (QL/96).
Neo-Quenya: I think this word may be salvaged in Neo-Quenya as ᴺQ. tundo based on a Neo-Root ᴺ√TUD.