陥没[kanbotsu] cave-in
収没[shuubotsu] confiscation of possessions
出没[shutsubotsu] appearing frequently
神出鬼没[shinshutsukibotsu] appearing in unexpected places and at unexpected moments
水没[suibotsu] submerge

戦没[senbotsu] death in battle
戦没者[senbotsusha] persons who have fallen in battle
戦没者追悼記念日[senbotsushatsuitoukinenbi] Memorial Day (US)
沈没[chinbotsu] sinking
日没[nichibotsu] sunset

データの先頭[deetanosentou] beginning of data
一頭[ittou] one large animal (horses, cattle, etc.)
一頭立て[ittoudate] one-horse (carriage)
咽頭[intou] pharynx
駅頭[ekitou] station

音頭[ondo] leading a group of people
会頭[kaitou] society president
街頭[gaitou] in the street
核弾頭[kakudantou] nuclear warhead
巻頭[kantou] opening page of book