Claim: One Direction is a group.
Evidence: One Direction -LRB- commonly abbreviated as 1D -RRB- are an English-Irish pop boy band based in London , composed of Niall Horan , Liam Payne , Harry Styles , Louis Tomlinson , and previously , Zayn Malik until his departure from the band on 25 March 2015.
A boy band -LRB- or boyband -RRB- is loosely defined as a vocal group consisting of young male singers , usually in their teenage years or in their twenties at the time of formation , singing love songs marketed towards young females.