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.

Middle Primitive Elvish

lath

root. string, thong

A root in The Etymologies of the 1930s glossed “string, thong”, with derivatives like ᴹQ. latta “strap” and N. lhath “thong of (?leather)”, the last gloss being somewhat unclear (Ety/LATH).

Middle Primitive Elvish [Ety/KHAT; Ety/LATH; EtyAC/LATH] Group: Eldamo. Published by

yen

root. year

A root in The Etymologies of the 1930s glossed “year” with derivatives like ᴹQ. yén/N. în “year” (Ety/YEN). Tolkien’s ongoing use of words like Q. yén and S. ínias “annals” indicate its ongoing validity (LotR/377; MR/200), but in Quenya at least the meaning shifted to that of an “Elvish long year”, equal to 144 solar years (LotR/1107; MR/471; NM/84).

Middle Primitive Elvish [Ety/GENG-WĀ; Ety/LEP; Ety/RIN; Ety/YA; Ety/YEN] Group: Eldamo. Published by

yenrinde

noun. year

Middle Primitive Elvish [Ety/YEN; EtyAC/YEN] Group: Eldamo. Published by

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.