Poison and Life Drain
Poison (via Bang's poison nail) and Life Drain (via Hazama's Overdrive) both steadily decrease the opponent's life while active, but can never kill the opponents by themselves; the most they can do is decrease the opponent's life to 1 health.
When your character is attribute invincible to an enemy's, you may notice that a white circle will appear.
Note that it doesn't always show, for example, ground throws vs airborne opponents won't show this circle.
Instantly Stopping a Run
While running, a throw totally halts your character's momentum. This throw can be kara canceled into Barrier (done via [BC] > 4ABC) to immediately come to a stop, avoiding the sliding momentum that a regular Barrier run stop would have. The difference isn't normally worth it given the execution requirement but it could have situational applications or be used in precise spacing games.