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.

Qenya 

ovesta

noun. contract, compact, treaty

The Etymologies of the 1930s had ᴹQ. vesta “contract” as well as ᴹQ. ovesta as the cognate to N. gowest “contract, compact, treaty”, all derived from the root ᴹ√WED “bind” (Ety/WED). These Quenya words were deleted since they collided with derivatives of ᴹ√BES having to do with marriage.

Neo-Quenya: I would restore ᴺQ. ovesta “contract, compact, treaty” for purposes of Neo-Quenya since we have no better alternatives.

Qenya [Ety/WED; Ety/WŌ] Group: Eldamo. Published by

vesta

noun. contract

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.