The term regular view is used to describe a view that is recomputed each time you reference the view, and the result set is not stored on disk. This is the most commonly used type of view. Most of the documentation refers to regular views.

The term materialized view is used to describe a view whose result set is precomputed and materialized on disk similar to the contents of a base table.

The meaning of the term view (by itself) in the documentation is context-based. When used in a section that is talking about common aspects of regular and materialized views, it refers to both regular and materialized views. If the term is used in documentation for materialized views, it refers to materialized views, and likewise for regular views.