What is the incorrect word in this sentence: The charge nurse overheard the nursing assistant discussing the private details of a client's medical condition with a personnel friend in the hospital cafeteria?

The term "personnel" is used incorrectly in this context because it describes a group of people who are employed in an organization, usually referring to staff members or employees. In the sentence, the intended meaning is to refer to a "personal" friend, which indicates a friend whom one shares a close, private relationship with, rather than someone associated with the workplace. The word "personal" means relating to one's private life, which fits the context of discussing private medical details. This substitution clarifies the nature of the friendship being discussed, making it clear that the relationship is not professional but rather personal. Thus, "personal" should replace "personnel" to convey the intended meaning accurately.