Venom gives animals a deadly edge in survival. By injecting toxins, venomous animals can kill prey larger and faster than themselves and deter even the most threatening predator. These terms are often used interchangeably, but they actually have very different meanings. It is the delivery method that distinguishes one from the other. Venom, on the other hand, is always injected.
Every venomous animal has a mechanism to inject toxins directly into another animal.
Stab with tails. Slash with spines. Pierce with fangs. Spike with spurs. Shoot with harpoons.