The Assignments tool in Canvas allows an instructor to create and track all of the assignments in a course and shows students all of the activities that will be expected of them and the points for each activity.
In Canvas, gradebook set-up is contingent on the creation of assignments and assignment groups. It is fairly accurate to say that in Canvas, Assignments and Gradebook are different aspects of the same tool.
All gradable items, such as assignments, discussions and quizzes can be created directly in Assignments. You can also create quizzes and graded discussions in their own tool; each item will show up as an assignment.
Each item created in Assignments needs to be placed within an Assignment Group to set up grading rules and weight grades.
Canvas Guides
See the Canvas Instructor Guide for additional guides on Assignments and Grades.