A 'journal' or 'periodical' or 'serial' = any publication published regularly (includes magazines, newspapers, newsletters).
A ‘scholarly’ or 'academic’ journal: periodical containing research articles, that is peer-reviewed, and aimed at researchers.
Peer review: every paper/article submitted to the journal is reviewed by independent experts. Papers are accepted/rejected based on quality.
Databases help you to discover what has been published in the journals, in your area of research. The following are a good starting-point for a literature search for your research topic:
OneSearch searches across a lot of the Library print AND electronic resources at the same time, including:
Information on how to use OneSearch
By Ludovic Bertron from New York City, Usa - https://www.flickr.com/photos/23912576@N05/2942525739, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=14831997
Sample of ejournal and ebook titles on gay literature available via UCC Library ej-ournals/e-books Portal. Try other search terms to pick up other relevant titles e.g. sexualit* (includes sexuality, sexualities), queer etc.