An assault is an intentional act that causes another person to fear imminent harm or injury. It can involve threats, gestures, or actions that create a sense of danger. Assault does not necessarily require physical contact; the mere perception of a threat can be enough for it to be classified as an assault. There are different types of assaults, including simple assault, which typically involves minor injuries or threats, and aggravated assault, which involves more serious harm or the use of a weapon. Legal definitions and consequences for assaults can vary by jurisdiction.