According to American Combat Shuai Chiao Association, the word "combat" is defined as "the integration of kick, punch, lock, throw, and following up striking".
http://combatshuaichiao.com/main.html
When David C. K. Lin was hired to teach Sionics, a prestigious Georgia-based Anti-terrorism school. He found out that his students in that school (CIA agents, FBI agents, president's body guards, ...) were not interest in tournament winning but "how to take care bad guys", the training was evolved and the term "combat" was used since then.