So dabbing is a method of consuming extracts. It's basically like using hot knives. Heat up one surface, then place the extract on the hot surface and inhale the vapors. A dab rig is basically a bong with quartz bucket. You heat up the bucket, drop the extract in, and inhale from the bong.
Extracts have many names hash, oil, QWISO, BHO, dry sift, water hash, rosin, wax, shatter, etc. The old school honey oil was usually made with an ethanol extraction followed by a hexane cleaning process.