堆石[taiseki] (terminal) moraine
堆積[taiseki] pile (of things)
堆肥[taihi] compost
堆朱[tsuishu] red lacquerware with patterns carved in relief
堆積作用[taisekisayou] sedimentation

堆積学[taisekigaku] sedimentology
堆積岩[taisekigan] sedimentary rock
堆積物[taisekibutsu] sediment
堆積層[taisekisou] sedimentary layer
堆積輪廻[taisekirinne] cycle of sedimentation

に就て[nitsuite] concerning
に就き[nitsuki] because of
去就[kyoshuu] committing one's self
就いては[tsuiteha] in line with this
就きましては[tsukimashiteha] in line with this

就く[tsuku] to ascend (the throne)
就ける[tsukeru] to install (a king, emperor, etc.)
就学[shuugaku] entering school
就学義務[shuugakugimu] compulsory school attendance
就学児童[shuugakujidou] school child

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)