Early Quenya
táma
adjective. this
ike
adjective. this
nat
noun. thing
neta
noun. thing
ni
pronoun. this
qi
pronoun. this
qinda
adjective. this
qinqe
pronoun. this
si
pronoun. this
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.