Gnomish
aibin
noun. cherry (tree)
aibios
noun. cherry (tree)
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 word appearing as G. aibin “cherry tree” in the Gnomish Lexicon of the 1910s along with a variant aibios, both cognates to ᴱQ. aipio of similar meaning (GL/18). Its initial element was from the early root ᴱ√AYA having to do with reverence (QL/34), and its final elements were variants of the berry words G. pibin and G. piog (GL/64). In Gnomish Lexicon Slips the word became {ebin >>} eibin “cherry” (PE13/113), with the vowel change due to the newly introduced *i*-affection.
Neo-Sindarin: I would update this word to ᴺS. aebin which is more compatible with the phonetic developments of Sindarin in the 1950s and 60s, where *ai* become *ae*. I would use it for both a “cherry” and a “cherry tree”.