A periodical is a publication that comes out periodically, such as a magazine, journal, or newspaper.
Keep in mind that a scholarly journal is aimed at an audience of scholars who study a particular field. Many scholarly journals are also peer-reviewed, but not all.
Some examples of trade periodical titles are American Libraries, Social Work Practice, Professional Nurse, and Farming Magazine.
Some examples include Newsweek, Better Homes and Gardens, Ebony, and Rolling Stone.