Libel is in printed form. Slander is in oral or spoken form. Saying harmful things about someone is neither libel nor slander if those statements are factual.

Libel is in printed form. Slander is in oral or spoken form. Saying harmful things about someone is neither libel nor slander if those statements are factual. It's only libel or slander if the statements that are made are false. IANAL but... It is my understanding that statements can be considered "per se" libel or slander even if they are expressed as opinion as long as they are made negligently or with malice and they cause reputational harm.