Vokuro: Difference between "banned" and "suspended"

Hello,

Is there any difference between the database columns "banned" and "suspended" in the vokuro project? Don't they both have the same purpose? And if yes, why do both exist?

Thank you

Ps: Here is the database scheme for vokuro

CREATE TABLE IF NOT EXISTS `users` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `email` varchar(255) NOT NULL,
  `password` char(60) NOT NULL,
  `mustChangePassword` char(1) DEFAULT NULL,
  `profilesId` int(10) unsigned NOT NULL,
  `banned` char(1) NOT NULL,
  `suspended` char(1) NOT NULL,
  `active` char(1) DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `profilesId` (`profilesId`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=5 ;