There are two types of defamation in Nevada: slander and libel. Both types involve untrue statements. The difference is that slander refers to statements that are spoken while libel refers to statements that are written.
Both types of statements are equally defamation with the same penalties. Practically, libel is easier to prove than slander because libel is written down. With libel, there’s a greater chance you’ll have a copy of the statement to offer as evidence.