輻射[fukusha] radiation
輻射点[fukushaten] radiant point
輻湊[fukusou] congestion (e.g. traffic)
輻射線[fukushasen] radiation
輻射熱[fukushanetsu] radiant heat

輻射エネルギー[fukushaenerugii] radiant energy
制動輻射[seidoufukusha] bremsstrahlung (physics)
トラフィック輻輳[torafikkufukusou] traffic congestion
ポート輻輳[pootofukusou] port congestion

隣の芝生は青い[tonarinoshibafuhaaoi] the grass is always greener on the other side
近隣[kinrin] neighbourhood
近隣諸国[kinrinshokoku] neighboring countries
先隣[sakitonari] next door but one
善隣[zenrin] good neighbour

善隣友好[zenrinyuukou] neighbourly friendship
又隣[matadonari] second door from here
両隣[ryoudonari] both sides
隣り[tonari] neighbor (neighbour)
隣家[rinka] neighbouring house