火燵布団[kotatsubuton] cover for kotatsu
圧力団体[atsuryokudantai] pressure group
一家団欒[ikkadanran] happy family get-together
一団[ichidan] body
右翼団体[uyokudantai] right-wing organization (clique) (organisation)

営団[eidan] corporation
応援団[ouendan] cheering party
応援団長[ouendanchou] cheerleader
花より団子[hanayoridango] dumplings rather than flowers
外郭団体[gaikakudantai] auxiliary organization

ひと塊[ikkai] one lump
塊根[kaikon] tuberous root
塊状[kaijou] massive
凝塊[gyoukai] clot
金塊[kinkai] nugget

集塊[shuukai] agglomerate (e.g. of cells, molecules, etc.)
団塊の世代[dankainosedai] baby boom generation
土塊[dokai] lump of earth
肉塊[nikukai] piece of meat
氷塊[hyoukai] lump of ice