A person is guilty of an offense if that person:

Pennsylvania
In Pennsylvania, an offender can be charged with simple assault if they:

injure someone else recklessly, knowingly, or purposefully
accidentally injure someone with a firearm or weapon
cause a needle-stick to an officer or correctional employee during a search or arrest
threaten or intimidate someone causing fear of imminent serious bodily injuryA person convicted of simple assault can be ordered to up to two years in prison as a second-degree misdemeanor.An offender can be charged with aggravated assault if the offender:

demonstrates extreme indifference to the victims life
injures or threatens to injure a law enforcement officer, correctional officer, firefighter, police officer, or teacher on duty, or for incapacitating any of these individualsA person convicted of aggravated assault can face up to 10 years in prison as a second-degree felony. However, if the crime is perpetrated against a firefighter or police officer, the offender may face first-degree felony charges carrying a penalty of up to 20 years in prison. Tennessee
In Tennessee assault is defined as follows:
39-13-101. Assault. See also
Domestic violence
Gay bashing
Hate crime
Mayhem
Offences against the Person Act 1861

Citations
General and cited references
Baker, Dennis; William, Glanville. "Chapter 9". Textbook of Criminal Law. London, Sweet & Maxwell. External links

A guide to the non fatal offences against the person
However, subsequent studies have found that, though DLD runs in families, it is not usually caused by a mutation in FOXP2 or another specific gene. Current evidence suggests that there are many different genes that can influence language learning, and DLD results when a child inherits a particularly detrimental combination of risk factors, each of which may have only a small effect. Nevertheless, study of the mode of action of the FOXP2 gene has helped identify other common genetic variants involved in the same neural pathways that may play a part in causing DLD.Language disorders are associated with aspects of home environment, and it is often assumed that this is a causal link, with poor language stimulation leading to weak language skills. Twin studies, however, show that two children in the same home environment can have very different language outcomes, suggesting we should consider other explanations for the link. Children with DLD often grow up into adults who have relatively low educational attainments, and their children may share a genetic risk for language disorder.One non-genetic factor that is known to have a specific impact on language development is being a younger sibling in a large family. Associated factors
It has long been noted that males are more affected by DLD than females, with a sex ratio of affected males-to-females around 3 or 4:1. However, the sex difference is much less striking in epidemiological samples, suggesting that similar problems may exist in females but are less likely to be detected.