to satisfy oneself (by doing); to find relief (in doing)
acid reflux; bile reflux; pyrosis; gloating; gratification; satisfaction
to feel relieved; to feel satisfied
fractional distillation; fractionation
drain and pool for collecting sewage, etc.
accumulation; retention; collection; sequestration (as in carbon dioxide sequestration); storage (usually a liquid, e.g. rainwater, or behind a dam.)
fraction (e.g. in distillation); cut