Personal information is information that identifies an individual or can reasonably be linked to an identifiable individual. It may include direct identifiers, such as a name, or indirect identifiers, such as address, contact details, or contextual information.
Personal information (as defined by the Office of the Privacy Commissioner) is any information which tells us something about a specific individual. The information does not need to name the individual, as long as they are identifiable in other ways (for example through their home address).