Speaking soley for myself:

Cumming: a nice, slow, soft rolling throughout my abdomen that makes me moan. Most often felt when i'm cumming from a quiet and warm session of fingering. My knees jerk closed and my eyes close as I savor the sensations.

Orgasms: sharper, quicker, and harder pulses or jerks that cause me to lift my hips and cry out. *smiles*. Usually, these also cause my knees to fall OPEN.

Climaxes: strong, rolling waves and convulsions that take over my body, make me scream or yell. The good ones start deep inside my abdomen and pull energy from the soles of my feet, my fingers, and my breasts. This is when I ejaculate (if i'm going to) and when i want to drag out the sensations to keep them going forever. When i'm done, i feel weak, as though my muscles have turned to liquid. Usually this is the time I'm told that I'm going to cum again for my lover and I'm like, "I am?" Lightheadedness is not uncommon after a couple of climaxes.

A side note to ObeyMe: making sweet love? a Dom whispering sweet phrases about His girl's "filthy, nasty, slutty bitchism" in her ear to make her cum harder.

At least, it is in my humble opinion.