Samurai is the name used, predominantly in the West, for warriors of pre-modern Japan. The expression Bushi is more common in the Land of the Rising Sun itself.
Over time, Samurai ideology was strongly influenced by Zen Buddhism. Thus, a firm code of honour for justice and the protection of the weak and defenceless developed. Bushido or +the path of the warrior; also stood for self-sacrifice, absolute loyalty, bravery, maximum weapon mastery and being on constant standby to fight.