ゴミ集積場[gomishuusekijou] village garbage collection point
欝積[usseki] accumulation (e.g. of emotions, grievances, etc.)
沖積[chuuseki] alluvial
沖積期[chuusekiki] alluvial period
沖積世[chuusekisei] alluvial epoch (i.e. the Holocene epoch)

沖積層[chuusekisou] alluvium
沖積土[chuusekido] alluvial soil
下積み[shitazumi] lowest social strata
求積[kyuuseki] mensuration
経路積分[keirosekibun] path integral (physics)

繋累[keirui] dependents
堅累[kenrui] stronghold
俗累[zokurui] wordly troubles
累加[ruika] acceleration
累計[ruikei] cumulative total

累算[ruisan] total
累乗[ruijou] raising a number to a power
累進[ruishin] successive promotion
累進課税[ruishinkazei] progressive taxation
累進税[ruishinzei] progressive tax