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.
saune
noun. bath, small pool
faskalan
noun. bath
A word appearing as faskala as an element in the name ᴱQ. Faskala-númen “Bath of the Setting Sun”, also appearing as standalone Faskalan (LT1/187), so probably meaning “bath”. As pointed out by Christopher Tolkien, it is probably related to G. fôs “bath” (LT1A/Faskala-númen).
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 appearing as ᴱQ. saune in the Qenya Lexicon and Poetic and Mythological Words of Eldarissa of the 1910s glossed “a bath” or “bath, small pool”, and derived from the early root ᴱ√SOVO or ᴱ√SOW̯O “wash” (QL/86; PME/86). Very likely the ancient ou became au as was the usual phonetic development in Qenya of the 1910s and 20s.
Neo-Quenya: I retain ᴺ√SOW “wash” for purposes of Neo-Quenya, so I would adapt this word as ᴺQ. súnë “bath, small pool” using the later Quenya sound change of ou to ū.