The book review is a special kind of article. It can refer to all sorts of literature, from popular to scientific. The term 'review' is also used for comments by readers in Google Books or Amazon. In this case the reader's background is irrelevant, each comment has the same value. But there is a distinct difference in quality between superficial and 'learned' comments.
The scholarly review only deals with recent scholarly and relevant publications. The reviewers are researchers and their intended audience is their peers. This kind of review usually describes the contents of a book or article but also contains an assessment of its quality. Scholarly reviews are published in scholarly journals, which makes them easily distinguishable from the reviews mentioned in the above paragraph. Scholarly journals usually have a special book review section. Some journals consist solely of book reviews. They usually have the word 'review' in their title.
Academics also publish reviews in newspapers. This does not make them less valuable, but their style will be less scientific in order to appeal to a broader public. Whether or not such a newspaper review may be cited in a list of references needs to be discussed with your lecturer.
In Nexis Uni you can find reviews in newspapers, magazines and other news sources from around the world. Nexis Uni is a good source for reviews of recent publications. To limit your search results you can select the subject filter 'reports, reviews & sections'.
Search tip for finding reviews in bibliographic and other databases:
When you are searching for a review of e.g. Turks Fruit by Jan Wolkers, place the title words between double quotation marks "turks fruit" (in SmartCat) or between brackets (turks fruit) and combine this with "book review" or "review".