Middle Primitive Elvish
-nā
suffix. adjective
nā/ana
root. be, exist
nā/ana
root. to, towards
-ina
suffix. adjective
ana
root. be, exist
eʒ
root. be
ruskā
adjective. brown
yē
preposition. at
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.