Canovan noted that "if the notion of "populism" did not exist, no social scientist would deliberately invent it; the term is far too ambiguous for that". From examining how the term "populism" had been used, she proposed that seven different types of populism could be discerned. Three of these were forms of "agrarian populism"; these included farmers' radicalism, peasant movements, and intellectual agrarian socialism. The other four were forms of "political populism", representing populist dictatorship, populist democracy, reactionary populism, and politicians' populism. She noted that these were "analytical constructs" and that "real-life examples may well overlap several categories", adding that no single political movement fitted into all seven categories. In this way, Canovan conceived of populism as a family of related concepts rather than as a single concept in itself.