Trademark "fair use" differs significantly from fair use under copyright law. In trademark law there are two types of fair use: descriptive and nominative use. Descriptive fair use permits the use of a descriptive mark in a descriptive way; for example, an advertisement could say that a particular dress shoe "feels like a sneaker" even though the phrase "Looks like a pump, feels like a sneaker" is the trademark of another company. Nominative fair use permits the use of a mark to identify the product that bears that mark, when (1) the product or service in question is not readily identifiable without use of the trademark; (2) no more of the mark is used than is reasonably necessary to identify the product or service; and (3) the user does nothing beyond use of the mark that would suggest sponsorship or endorsement by the trademark holder. For example, a news story about the New Kids on the Block can use the mark "New Kids on the Block" to identify the band. Nominative fair use is often particularly relevant to fanfiction, since a fanfiction writer's use of trademarked names, settings, etc. to identify characters, story settings, etc. will generally meet the three requirements for nominative fair use. For this reason, fanfiction is harder to succeed on than an allegation of copyright infringement.