Organising the terminologies.... What means what?

Child Advocacy: 
Child advocacy refers to a range of individuals, professionals and advocacy organizations who promote the optimal development of children. An individual or organization engaging in advocacy typically seeks to protect children's rights which may be abridged or abused in a number of areas.

Abuse:
Child abuse is the physical, sexual, emotional mistreatment, or neglect of children. In the United States, the Center for Disease Control and Prevention (CDC) define child maltreatment as any act or series of acts of commission or omission by a parent or other caregiver that results in harm, potential for harm, or threat of harm to a child. Child abuse can occur in a child's home, or in the organizations, schools or communities the child interacts with. There are four major categories of child abuse: neglect, physical abuse, psychological/emotional abuse, and child sexual abuse.

Neglect is a passive form of abuse in which a perpetrator is responsible to provide care for a victim who is unable to care for himself or herself, but fails to provide adequate care.
Neglect may include the failure to provide sufficient supervision, nourishment, or medical care, or the failure to fulfill other needs for which the victim is helpless to provide for himself or herself.

Physical abuse is abuse involving contact intended to cause feelings of intimidation, injury, or other physical suffering or bodily harm.


Psychological abuse, also referred to as emotional abuse or mental abuse, is a form of abuse characterized by a person subjecting or exposing another to behavior that may result in psychological trauma, including anxiety, chronic depression or post-traumatic stress disorder. Such abuse is often associated with situations of power imbalance, such as domestic violence, bullying, child abuse and in the workplace.

Child sexual abuse is a form of child abuse in which an adult or older adolescent uses a child for sexual stimulation. Forms of child sexual abuse include asking or pressuring a child to engage in sexual activities (regardless of the outcome), indecent exposure of the genitals to a child, physical sexual contact with a child, or using a child to produce child pornography.


(All definitions were taken from wikipedia)