Practitioner
武者 (wǔ zhě) roughly means "martial person"... in other words, a Warrior or Martial Artist.
In some novels, Practitioners are distinguished from Cultivators (wůzhě vs xiuzhě). When this is the case, Practitioners are portrayed as mere mortals who train their bodies and martial arts using mundane methods, while Cultivators train using mystical methods and can potentially ascend to immortality.
Cultivation
修炼 (xiū liàn) — The act of cultivating, refining the body, soul, or energy.
修行 (xiū xíng) — Cultivating one's conduct or spiritual path. Often broader or more philosophical.
修真 (xiū zhēn) — Cultivating to attain the "true self" or the Dao. Heavily used in Daoist-style xianxia.
Cultivation is the path of self-improvement, a relentless pursuit of health, power, and longevity that transcends the boundaries of ordinary existence. At its core, cultivation is a rebellion against the natural order, a fight against Heaven itself. Humans, born mortal and frail, are bound by the limitations of short lifespans and the inability to manipulate the unseen forces of the world.
Yet, through sheer willpower and determination, cultivators strive to defy these limits, seeking to transform their bodies and spirits into something more, to become Immortal or even attain godhood.
Cultivator
修士 (xiū shì) — Literally "cultivation scholar." Commonly used in xianxia to refer to someone who practices cultivation.
修炼者 (xiū liàn zhě) — "One who cultivates" or "cultivation practitioner."
a person who trains in martial & mystical arts, generally in order to become powerful and increase their longevity. Meditation and the cultivation of Qi are common practices among cultivators.
Rogue Cultivators (散修 sǎnxiū) - literally translates as "Loose Cultivators". Independent cultivators unaffiliated with any sect, clan, or other martial organizations.