Literature Review: it is a product and a process.

As a product, it is a carefully written examination, interpretation, evaluation, and synthesis of the published literature related to your topic. It focuses on what is known about your topic and what methodologies, models, theories, and concepts have been applied to it by others.

The process is what is involved in conducting a review of the literature.

• It is ongoing
• It is iterative (repetitive)
• It involves searching for and finding relevant literature.
• It includes keeping track of your references and preparing and formatting them for the bibliography of your thesis

Scoping reviews are a "preliminary assessment of potential size and scope of available research literature. Aims to identify nature and extent of research evidence (usually including ongoing research)."
Grant and Booth (2009).

Scoping reviews are not mapping reviews: Scoping reviews are more topic based and mapping reviews are more question based.

• examines emerging evidence when specific questions are unclear - clarify definitions and conceptual boundaries
• identifies and maps the available evidence
• to summarize and disseminate research findings in the research literature
• identify gaps with the intention of resolution by future publications
• a scoping review can be done prior to a systematic review

Many evidence-based disciplines use ‘systematic reviews," this type of review is a specific methodology that aims to comprehensively identify all relevant studies on a specific topic, and to select appropriate studies based on explicit criteria.
(https://cebma.org/faq/what-is-a-systematic-review/)

• clearly defined search criteria
• an explicit reproducible methodology
• a systematic search of the literature with the defined criteria met
• assesses validity of the findings 
• a comprehensive report on the findings, apparent transparency in the results