- reflux - an abnormal backward flow of body fluids
--1 is a kind of pathology
--1 has particulars:gastroesophageal reflux, esophageal reflux, oesophageal reflux; hepatojugular reflux; ureterorenal reflux; vesicoureteral reflux - ebb, reflux - the outward flow of the tide
--2 is a kind of flow, flowing
--2 is a part of ebbtide - ebb, reflux - the outward flow of the tide