Any bodily injury caused as the result of a willful act of another can be called a corporal injury. For example, while beating a child or spouse, if a bodily injury is caused such an injury is called corporal injury.
Cal Pen Code § 273.5, prescribes punishments for corporal injury.
§ 273.5. Infliction of injury on present or former spouse or cohabitant or parent of child; Punishment; Conditions of probation; Issuance of restraining order
(a) Any person who willfully inflicts upon a person who is his or her spouse, former spouse, cohabitant, former cohabitant, or the mother or father of his or her child, corporal injury resulting in a traumatic condition, is guilty of a felony, and upon conviction thereof shall be punished by imprisonment in the state prison for two, three, or four years, or in a county jail for not more than one year, or by a fine of up to six thousand dollars ($6,000) or by both that fine and imprisonment. (b) Holding oneself out to be the husband or wife of the person with whom one is cohabiting is not necessary to constitute cohabitation as the term is used in this section. (c) As used in this section, "traumatic condition" means a condition of the body, such as a wound or external or internal injury, whether of a minor or serious nature, caused by a physical force. (d) For the purpose of this section, a person shall be considered the father or mother of another person's child if the alleged male parent is presumed the natural father under Sections 7611 and 7612 of the Family Code. (e) (1) Any person convicted of violating this section for acts occurring within seven years of a previous conviction under subdivision (a), or subdivision (d) of Section 243, or Section 243.4, 244, 244.5, or 245, shall be punished by imprisonment in a county jail for not more than one year, or by imprisonment in the state prison for two, four, or five years, or by both imprisonment and a fine of up to ten thousand dollars ($10,000). (2) Any person convicted of a violation of this section for acts occurring within seven years of a previous conviction under subdivision (e) of Section 243 shall be punished by imprisonment in the state prison for two, three, or four years, or in a county jail for not more than one year, or by a fine of up to ten thousand dollars ($10,000), or by both that imprisonment and fine.