Although peer-reviewed journals are always scholarly in nature, scholarly journals are not always peer-reviewed. Scholarly journals report on the results of original research and experimentation. Publication of scholarly articles requires the approval of an editorial board. Peer-reviewed or refereed journals go through a more rigorous review process of a panel of the experts before publication. See: Peer Review in 3 minutes below.
The Idaho State University Library updated this You Tube video in January 2020.
What is a critical appraisal? Watch, "Introduction to Critical Appraisal."