How are `all: unset` and `all: revert` dissimilar from each other?

edit

all: unset removes all values previously set for a property, including any default values.

all: revert sets the value of a property to its inherited value, effectively undoing any changes made to the property in the current selector.

The key difference between the two is that all: unset removes all values, including defaults, while all: revert only reverts to the inherited value.