Catharism, a Christian heresy attested from approximately the tenth until the fifteenth century from France to Asia Minor, advocated a path to salvation through one sacrament, held that the material world was evil, and believed that salvation was available for all believers. The Cathars shared with the Bogomils (another, nearly contemporary Christian heresy) certain elements of belief, organization, and ritual, whose dissemination probably followed the trade routes from East to West. The Cathars, who called themselves simply "good Christians," constituted a real counter-church, consisting of believers, clergy, and bishops. The name "Cathar" was explained as referring to cat worshippers, because the Cathars were accused of holding diabolical rites, or as a derivative from the Greek word katharos (meaning "clean, pure") to describe the pure asceticism of the believers.