“Book reviews are usually written shortly after a book is published and discuss it as a whole, from the perspective of whether it is worth reading or acquiring. They appear in magazines, newspapers, and scholarly journals for the specific purpose of keeping their readers up-to-date on books likely to be of interest to them. Similarly, … film reviews follow openings and help audiences decide what to attend. Criticism, unlike reviews, is usually written some period of time after the work is made public…. Critical books or articles often focus on specific aspects or themes in a book [or] film ….”
(Baker, Nancy L. and Nancy Huling. A Research Guide for Undergraduate Students: English and American Literature. New York: Modern Language Association of America, 2006, p. 45)
Quill & Quire is "Canada's magazine of book news and reviews"