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.
yáva
noun. fruit, produce
yava-
verb. to bear fruit
yava-
verb. to hold
A verb for “hold” in Early Quenya word lists of the 1920s (PE16/133). It is of unclear derivation, but possibly related to ᴱQ. yavin “bears fruit” as suggested by Patrick Wynne and Christopher Gilson.
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 verb appearing in the form ᴱQ. yavin “bears fruit” in the Qenya Lexicon of the 1910s under the early root ᴱ√ẎAVA having to do with fruit (QL/105).
Neo-Quenya: Since ᴹ√YAB “fruit” survived in Tolkien’s later writings, I think ᴺQ. yav- “to bear (fruit), ✱yield, bring forth, produce” can be retained for purposes of Neo-Quenya.