Deviation means that when calculating the high and low points of the index, if the stock price hits a new high and the index does not hit a new high, you will have a top deviation, which is equivalent to calculating the extreme high and low points.
However, divergence is different. Deviation is to calculate the sum of all changes between the moving averages of two different periods. In the macd mountain, that is, the area with red and green columns, in the era when entanglement theory existed, technical analysis was mainly based on form. Today, anyone's mobile phone can easily calculate the area of macd deviation.
It's a bit awkward.
It's obvious when you look at the picture.
One is the deviation of macd line, and the other is the deviation of macd.