Communicative competence has been studied for decades and focuses on the social and cultural aspects of communicating in a second language. It was first coined by Dell Hymes in 1972 as going beyond Chomsky's view of linguistic competence. James Cummins later proposed distinguishing between cognitive academic language proficiency and basic interpersonal communication skills. Canale and Swain's 1983 definition of communicative competence included four subcategories: grammatical competence, discourse competence, sociolinguistic competence, and strategic competence. Functions of language are the purposes accomplished through communication, such as stating, requesting, responding, greeting, and parting.