ヨガの流行[yoganoryuukou] the cult of yoga
亜流[aryuu] bad second
暗流[anryuu] undercurrent
一次電流[ichijidenryuu] primary current
一流[ichiryuu] first-class

溢流[itsuryuu] overflow
渦流[karyuu] swirling current
押流す[oshinagasu] to wash away
横流し[yokonagashi] diversion into illegal channels
横流れ[yokonagare] flowing into the black market

往還[oukan] traffic
還元[kangen] resolution
還俗[genzoku] return to secular life
還流[kanryuu] return current
還暦[kanreki] 60th birthday

還す[kaesu] to send (someone) back
還り[kaeri] return
還る[kaeru] to return
饋還[kikan] repatriation
強制送還[kyouseisoukan] forced repatriation