Any matter of fact that a party to a claim or action offers to provide to prove or disprove an issue in the case. The strongest type of evidence is that which provides direct proof of the truth of an assertion. At the other extreme is evidence that is merely consistent with an assertion but does not rule out other, contradictory assertions, and may be viewed as circumstantial evidence.

Damaging the reputation of a person or a group of people by publishing or saying bad things about them that are not true. More specifically, saying words which amount to defamation is slander and defamation in other forms, such as printed words or images, is libel.

Covers a wide range of behaviour of an offensive nature. It is commonly understood to be behaviour intended to disturb, threaten or upset, and it is characteristically repetitive.