Qenya
ovesta
noun. contract, compact, treaty
vesta
noun. contract
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
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.