The purpose of the current article is to identify the frequently used terms for the field of study that deals with the information and communication technology usage in the government and explore the difference and relationship, if any, between these terms. This field of study is inundated with old and new terminologies that lack clarity of usage leading to opportunistic usage, confusion, and impacting accumulation of knowledge. A three-stage search was followed to: (1) identify key terms used to refer to the field of study; (2) identify top ranked journals across social science, computer, and business management that publish in this field; and (3) identify the most frequently used terms in these select journals. The seven terms thus identified are smart government, e-government, e-governance, digital government, open government, e-democracy, and e-participation. The origin, definitions, and models of these terms is further explored, and their relationship is illustrated in diagrams of concentric and overlapping circles. The current study is a step toward developing a stable and dependable vocabulary that may benefit scholars in operationalizing the terms and practitioners in policy implementation and assessing policy effectiveness.