か弱い[kayowai] frail
ひ弱い[hiyowai] weak
意志薄弱[ishihakujaku] weak-willed
胃弱[ijaku] dyspepsia
虚弱[kyojaku] feebleness

強弱[kyoujaku] strength
弱い[yowai] weak
弱い者[yowaimono] weak person
弱い相互作用[yowaisougosayou] weak interaction (physics)

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