脚註[kyakuchuu] footnote
註解[chuukai] gloss
註文[chuumon] order
発註[hacchuu] ordering (materials)
付註[fuchuu] annotation

原註[genchuu] the original notes
古註[kochuu] commentaries of the ancients
傍註[bouchuu] marginal notes
受註[juchuu] receiving an order

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