シ
さむらい
士
士
gentleman, samurai
博士(はくし): (1) doctorate; PhD; Dr (as a title) (2) expert; learned person
同士(どうし): fellow; mutual; companion; comrade; bonding
兵士(へいし): soldier
紳士(しんし): gentleman
武士(ぶし): warrior; samurai
修士(しゅうし): master's (academic degree)
学士(がくし): university graduate