Second-wave feminism was a period of feminist activity that began in the early 1960s and lasted roughly two decades, ending with the feminist sex wars in the early 1980s and being replaced by third-wave feminism in the early 1990s. It occurred throughout the Western world and aimed to increase women's equality by building on the feminist gains of the late 19th and early 20th centuries.

First-wave feminism was a period of feminist activity and thought that occurred during the 19th and early 20th century throughout the Western world. It focused on legal issues, primarily on securing women's right to vote. The term is often used synonymously with the kind of feminism espoused by the liberal women's rights movement with roots in the first wave, with organizations such as the International Alliance of Women and its affiliates. This feminist movement still focuses on equality from a mainly legal perspective.