Hegemonism relies on powerful comprehensive national strength, leading high-tech and military strength, and the manifestation of hegemony mainly requires weak countries to obey their interests and interfere in their internal affairs as a means.

Terrorism is to confront or destroy a government or country in conflict by force or in an abnormal way the same as force.

The similarities between these two "isms" are both means of solving problems by force. The former is the behavior of the state, and the latter is the behavior of individuals or organizations. So it is the main source of insecurity in the world.