The crime of assault varies from state to state (and under federal law), but is generally defined as intentionally putting another person in reasonable apprehension or fear of an imminent (immediate) harmful or offensive contact. The crime of assault may be committed even if there is no physical contact, as the criminal physical contact constitutes the separate crime of battery.

The crime of assault with a deadly weapon (also known as aggravated assault) occurs when someone uses a deadly weapon (gun, knife, club, tire iron, brass knuckles, etc.) during an assault.

In Louisiana, assault is defined under the Louisiana Revised Statutes Title 14: Assault and Battery. Simple assault is considered a misdemeanor and is defined as an attempt to commit a battery, or the intentional placing of another in reasonable apprehension of receiving a battery, without a dangerous weapon. Aggravated assault, or assault with a deadly weapon, is a more serious offense and is also classified as a misdemeanor. It involves an assault committed with a dangerous weapon. Louisiana law considers a variety of objects as deadly weapons, not just firearms and knives, but any instrumentality which, in the manner used, is calculated or likely to produce death or great bodily harm. The penalties for assault can vary, with greater penalties for aggravated assault due to the involvement of a deadly weapon and the potential for more serious harm. It's important to note that the actual physical contact is not necessary for an assault charge; the threat or attempt is sufficient if it puts the victim in reasonable fear of imminent harm.