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.
li
preposition. with; and
lim
adjective. many
-lim
suffix. many
-li
suffix. noun suffix
gontha li dessa
boy and girl
-la
suffix. noun suffix
-od
suffix. noun suffix
-on
suffix. noun suffix
-st
suffix. noun suffix
-thi
suffix. noun suffix
-wen
suffix. noun suffix
-weth
suffix. noun suffix
-wi
suffix. noun suffix
cwenn
noun. Elf
lunta
noun. ship
-rim
suffix. *many
tathn
noun. number
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.