Bud? is a compound of the root bu (?), meaning war or martial; and d? (??), meaning path or way. Specifically, d? is derived from the Buddhist Sanskrit m?rga (meaning "path"). The term refers to the idea of formulating propositions, subjecting them to philosophical critique and then following a 'path' to realize them. D? signifies a "way of life". D? in the Japanese context, is an experiential term, experiential in the sense that practice (the way of life) is the norm to verify the validity of the discipline cultivated through a given art form. The modern bud? has no external enemy, only the internal enemy, one's ego that must be fought (state of Muga-mushin). Similarly to bud?, bujutsu is a compound of the roots bu (?), and jutsu (???), meaning technique Thus, bud? is most often translated as "the way of war", or "martial way", while bujutsu is translated as "science of war" or "martial craft." However, both bud? and bujutsu are used interchangeably in English with the term "martial arts". Budo and bujutsu have quite a delicate difference; whereas bujutsu only gives attention to the physical part of fighting (how to best defeat an enemy), budo also gives attention to the mind and how one should develop oneself. Modern budo uses aspects of the lifestyle of the samurai of feudal Japan and translates them to self-development in modern life.