Although both are typically housed in Departments of English, these courses are not the same as literature courses, which focus on literary analysis and interpretation. While some colleges and universities do incorporate literature and other humanities into their composition courses, it is much more often the case that composition coursework offers intensive instruction in writing non-fiction, expository texts using academic discourse conventions.[14] Writing curricula vary considerably from institution to institution, but it may emphasize many stages of different writing processes (invention or brainstorming, drafting, revision, editing, proofreading), different forms of writing (narration, exposition, description, argumentation, comparison and contrast), different portions of the written product (introductions, conclusions, thesis statements, presentation and documentation of forms of evidence, inclusion of quotations, etc.), along with different modalities of composing to expand the concept of 'writing'. Pedagogies or approaches to teaching writing are grounded in a range of different traditions and philosophies.