Unison (noun) — التناغم والانسجام: Simultaneous action or sound; complete agreement. Below are 6 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
A shared understanding or formal arrangement between parties.
An official agreement or harmony of opinion; as a verb, to give or grant something (often rights or recognition) — bringing parties into aligned understanding
Musical performance; harmony; cooperation; agreement; joint action; coordination
The state of being united or whole.
The act of joining; also an organisation of workers or states.
harmony
A group of voices singing together as one body; also the repeating refrain of a song that many voices return to after each verse