Peer-reviewed journals go through a rigorous process. Other scholars in the field review articles to ensure they meet scholarly and research standards.
Peer-reviewed articles and journals are considered 'scholarly' -- they are created by scholars and for scholars.
Note that all peer-reviewed journals are scholarly but all scholarly journals are not peer-reviewed.
Watch this video for more information on Peer-review and types of sources:
Peer-Reviewed articles are included in OneSearch and most library databases. You can narrow your search to only include articles in peer-reviewed journals.
To limit to peer-reviewed articles in OneSearch select "Peer-reviewed Journals" from the Availability menu on the left. Other databases have similar filters.