Pulling is simply the act of getting a monster to chase you to a safer position with more favorable terrain. Use a ranged weapon or spell to draw their ire, retreat to a defensible position and then engage. If you must, lure them by letting them spot you and then run!
Baiting is a straightforward, but extremely important, tactic to use in direct combat. Bait your enemies by drawing out an attack and evading it, and you can retaliate decisively (sometimes with a fatal backstab by circling around while your enemy is recovering from their lunge).
Most enemies, and especially large enemies (including bosses!) often have tells for their attacks, and even those that do not can still be baited simply by approaching, dancing in and out of attack range, and then swiftly dodging away.