A slogan is a memorable motto or phrase used in a political, commercial, religious and other context as a repetitive expression of an idea or purpose. The word slogan is derived from slogorn which was an Anglicisation of the Scottish and Irish Gaelic sluagh-ghairm (sluagh "army", "host" + gairm "cry"). Slogans vary from the written and the visual to the chanted and the vulgar. Often their simple rhetorical nature leaves little room for detail, and as such they serve perhaps more as a social expression of unified purpose, rather than a projection for an intended audience.