Literary movements are a way to divide literature into categories of similar philosophical, topical, or aesthetic features, as opposed to divisions by genre or period.
[1] Some of these movements (such as Dada and Beat) were defined by the members themselves, while other terms (for example, the metaphysical poets) emerged decades or centuries after the periods in question.
Further, some movements are well defined and distinct, while others, like expressionism, are nebulous and overlap with other definitions.
Because of these differences, literary movements are often a point of contention between scholars.
Notable authors ordering is predominantly by precedence.