Literature review
Definition: A literature review is a search and evaluation of the available literature in the specific subject or topic area. It documents the state of the art about the subject or topic you are writing about.
(Royal Literary Fund > Resources > Literature reviews > What is a literature review?, https://www.rlf.org.uk/resources/what-is-a-literature-review/ (14.10.2022))
Systematic literature review, systematic review
Definition: a synthesis of all relevant and high-quality research data.
A comprehensive summary of research on a specific topic. Systematic means that the selection, retrieval and review of data has been carried out systematically according to pre-defined criteria and methodology. A systematic review can also be seen as a research method to identify possible gaps in existing research knowledge.