Basic Trope: A defender fails to counterattack sufficiently to stop an aggressor.
Straight: General Drake is hounding Bob. Eventually Bob manages to knock Drake out, but Drake recovers and manages to catch Bob again.
Exaggerated: Bob barely dazes Drake with his counterattack before he tries to run. Drake shakes it off and continues his pursuit.
Downplayed: Bob manages to knock out Drake, so Bob pokes his body a few times to make sure he isn't Playing Possum. Fortunately, Drake isn't. Unfortunately, Drake soon recovers and continues to pursue Bob.
Bob's counter would have taken out a human. Unfortunately, Drake is anything but.
Bob is from a society that is highly litigious, with a history of Crime of Self-Defense cases, and Lawful Stupidity has made him afraid to hurt Drake sufficiently out of fear that he will get sued for battery.
Bob is not able to hurt Drake, but hitting him once will allow him to run away.