What's Brilliant move in chess?

According to the Google:a "brilliant" move is one that is not only the best move in the position, but also stands out for its cleverness and impact. It often involves a surprising piece sacrifice or a series of moves that unexpectedly leads to a strong advantage or checkmate. Brilliant moves are considered difficult to find and are often associated with a tactical brilliance or an unexpected insight into the position. 

In my opinion, brilliant moves stand for the only move that can change the whole position of the chess! Normally brilliant move will be playing in the early opening minor pieces sacrifice or after your opponent accidentally play a wrong move and you found the winning move by sac a piece. Besides, the most common brilliant sacrifice move is the Mate! Several mates need forces move right? So sometimes we have to sac some pieces in order to manipulate our opponent's move so that we can checkmate them and win the game!