膝蓋骨[shitsugaikotsu] kneecap
膝蓋腱反射[shitsugaikenhansha] kneecap (patellar) reflex
膝関節[shitsukansetsu] knee joint
膝がしら[hizagashira] kneecap
片膝[katahiza] one knee

諸膝[morohiza] both knees
膝小僧[hizakozou] kneecap
膝許[hizamoto] near one's knee
膝行[shikkou] moving forward by sliding on one's knees (in the presence of high-ranking individuals)

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