Qenya
erkasse
noun. holly
erke
noun. holly
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 appearing as ᴹQ. erkasse “holly” in The Etymologies of the 1930s, derived from the root ᴹ√ERÉK “thorn” (Ety/ERÉK). In a rejected page from the Quenya Verbal System (QVS) written in 1948, Tolkien had ᴹQ. erke “holly” derived from the same root (PE22/127). For purposes of Neo-Quenya, I’d stick to the (non-rejected) 1930s ercassë “holly”.
Conceptual Development: In the Qenya Lexicon and Poetic and Mythological Words of Eldarissa, Tolkien had ᴱQ. piosenna “holly”, a combination of ᴱQ. pio “berry” and ᴱQ. senna “red-brown” (QL/83; PME/83).