act address age atmosphere audience average belong birth broad campaign claim climate compare competition competitive complicated concern connection content continuous cost crime critical criticism critique custom damage declare distinctive dose drug earth electric electrical enemy engage engagement engine entail experience fix hardly healthy historical immigrant industry influence insist inspire intention lack literature market match measure medicine mere moderate motor nation novel object oil opportunity oppose partial partly past plane pleasure politics present price profit proper recall recommend regard religion replace resolution respectively responsibility rule search selection shape share soldier solution soul state struggle subject substance supply tax tension therapy threaten trade union upper victim view virtue wage worker