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.
aru
adverb. in addition, as well, besides
are
adverb. beside, along
The adverb ᴱQ. are “beside, along” appeared in the Qenya Lexicon of the 1910s under the early root ᴱ√ƷARA “spread, extend sideways” (QL/32).
Neo-Quenya: Since the preposition ar(a) “beside” appeared in Tolkien’s later writings, I think ᴺQ. arë “beside, along, ✱near” can be retained as an adverbial form of that preposition.
tur
noun. king
túranu
noun. king
vardar
noun. king
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 (deleted) adverb in the Qenya Lexicon of the 1910s glossed “in addition, as well, besides” under the early root ᴱ√ƷARA “spread, extend sideways” (QL/32).