In general, kung fu/kungfu (/ˌkʌŋˈfuː/  or /ˌkʊŋˈfuː/; pinyin: gōngfu pronounced [kʊ́ŋfu]) refers to the Chinese martial arts also called wushu and quanfa. In China, it refers to any study, learning, or practice that requires patience, energy, and time to complete. In its original meaning, kung fu can refer to any discipline or skill achieved through hard work and practice, not necessarily martial arts (for example, the discipline of tea making is called the Gongfu tea ceremony). The Chinese literal equivalent of "Chinese martial art" would be 中國武術 zhōngguó wǔshù.

Source: Wikipedia