The potential punishment for an assault in Canada varies depending on the manner in which the charge proceeds through the court system and the type of assault that is committed. The Criminal Code defines assault as a dual offence (indictable or summary offence). Police officers can arrest someone without a warrant for an assault if it is in the publics interest to do so notwithstanding S.495(2)(d) of the Code. This public interest is usually satisfied by preventing a continuation or repetition of the offence on the same victim. Some variations on the ordinary crime of assault include:

Assault: The offence is defined by section 265 of the Code. Assault with a weapon: Section 267(a) of the Code. Assault causing bodily harm: See assault causing bodily harm Section 267(b) of the Code. Aggravated assault: Section 268 of the Code. Assaulting a peace officer, etc. : Section 270 of the Code. Sexual assault: Section 271 of the Code. Sexual assault with a weapon or threats or causing bodily harm: Section 272 of the Code. Aggravated sexual assault: See aggravated sexual assault.An individual cannot consent to an assault with a weapon, assault causing bodily harm, aggravated assault, or any sexual assault. Consent will also be vitiated if two people consent to fight but serious bodily harm is intended and caused (R v Paice; R v Jobidon). A person cannot consent to serious bodily harm. Ancient Greece
Assault in Ancient Greece was normally termed hubris.
Simple assault may also involve an attempt to cause harm to another person, where that attempt does not succeed. Simple assault is typically classified as a misdemeanor offense, unless the victim is a member of a protected class, such as being a law enforcement officer. Even as a misdemeanor, an assault conviction may still result in incarceration and in a criminal record. Aggravated assault involves more serious actions, such as an assault that is committed with the intent to cause a serious bodily injury, or an assault that is committed with a deadly weapon such as a firearm. Aggravated assault is typically classified as a felony offense.Modern American statutes may define assault as including:

an attempt to cause or purposely, knowingly, or recklessly causing bodily injury to another
negligently causing bodily injury to another with a dangerous weapon (assault with a deadly weapon). causing bodily harm by reckless operation of a motor vehicle (vehicular assault). threatening another in a menacing manner. knowingly causing physical contact with another person knowing the other person will regard the contact as offensive or provocative
causing stupor, unconsciousness or physical injury by intentionally administering a drug or controlled substance without consent
purposely or knowingly causing reasonable apprehension of bodily injury in another
any act which is intended to place another in fear of immediate physical contact which will be painful, injurious, insulting, or offensive, coupled with the apparent ability to execute the act.In some states, consent is a complete defense to assault.