玄關[genkan] entranceway
玄関先[genkansaki] entrance
玄関番[genkanban] doorkeeper
玄人[kurouto] expert (professional) in a given trade or profession
玄孫[genson] great-great-grandchild

玄麦[genbaku] unpolished wheat or barley
玄武岩[genbugan] basalt
玄米[genmai] unpolished rice
玄米茶[genmaicha] tea (with roasted rice)
玄米[kuromai] unpolished rice