In the humanities and social sciences, critical theory is the examination and critique of society and literature, drawing from knowledge across social science and humanities disciplines. The term has two quite different meanings with different origins and histories, one originating in social theory and the other in literary criticism. Though until recently these two meanings had little to do with each other, since the 1970s there has been some overlap between these disciplines. This has led to "critical theory" becoming an umbrella term for an array of theories in English-speaking academia. This article focuses primarily on the differences and similarities between the two senses of the term critical theory.