Groups and TeamsGroups and teams are an important part of the organizational infrastructure (Beersma, Hollenbeck, Humphrey, Moon, Conlon, & Ilgen, 2005). Organizations form groups and teams in order to achieve organizational efficiency and foster employee growth and development because they are found to be better than individual efficiency (Watson and Gallagher, 2005). However, groups and teams are often confused and confused with each other even if they are different. This article is an attempt to understand the differences between groups and teams, the reasons for this existence and the importance of understanding this difference, before drawing conclusions from the analysis. Groups and Teams: Similarities and Differences A group is defined in many ways. For example, Turner (1982, p.15 in Forsyth, 2005, p.4) defines a group as “two or more people who perceive themselves as belonging to the same category”. In another definition, Pennington (2002, p.3) defines a group as “a psychological group of any number of people who interact with each other, are aware of each other, and perceive themselves as part of a group ”. In yet another definition, Keyton (2006) defines a group as two or more individuals who interact with each other and also work interdependently on a mutually agreed upon task or goal. Finally, Watson and Gallagher (2005) define a group as two or more people who can interact with each other, share common resources, but whose performance is measured and evaluated individually. Katzenbach and Smith (2005) also write that a group's performance is evaluated individually; that a team has a team leader, has a common goal that is more closely aligned with the overall organizational goal, and has a job that is… at the heart of the paper… competition and team performance: Towards a team approach contingency', Academy of Management Journal, 46, pp.572-590.Forsyth, D. (2005). Group dynamics. Mason, Ohio: Cengage Learning. Katzenbach, J., & Smith, D. (2005). “The Discipline of Teams,” Harvard Business Review, July-August issue. Keen, T. (2003). Create effective and successful teams. Purdue, United States: Purdue University Press.Keyton, J., & Beck, S. (2008). “Team Attributes, Processes, and Values: A Pedagogical Framework,” Business Communication Quarterly, 71(4), pp. 488-504.Keyton, J. (2006). Communicating in groups: Building relationships for group effectiveness (3rd ed.). New York: Oxford University Press. Pennington, D. (2002). The social psychology of small group behavior. Hove, UK: Psychology PressWatson, G., & Gallagher, K. (2005). Manage results. Broadway, London: CIPD Publishing.