The term journal is often used for publications that contain academic articles. Journals can be issued once per year, twice per year, or even weekly. Each issue of the journal contains new articles. These issues are later combined to create volumes.
Some journals require article submissions to go through a peer review process before being accepted for publication. During this process, experts from the same field as the author review the article to ensure that research methods are sound and that the article advances the field of study. This process prevents the publication of articles that make false claims and misinform readers.