Early Noldorin
ailin
noun. lake
lhuin
noun. pool
thlos
noun. shore, shore; [G.] breaker
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 glossed “shore” in Early Noldorin Word-lists of the 1920s (PE13/154). In the Gnomish Lexicon of the 1910s there was a similar word G. thloss “breaker” derived from ᴱ√thol-, as well as an earlier (rejected?) word G. thloth “breakers, waves, surf” (GL/73). The Early Noldorin word was thus likely of similar derivation. The Gnomish word G. thloss was “confused with flass, floss” (GL/35, 73), but there are no signs of this in Early Noldorin.