Intersect is an analytical operation that can be used to select any part of a feature that intersects with one or more other features. The areas of the map where all the input features intersect will create a feature as the intersect output.
The Intersect is a spatial relationship operation in which a query method is used. This query method selects features based on spatial relationships to other features. Features for selection can come from the same or different layers. Besides Intersect, other operations that use query to define spatial relationships are Containment and Proximity.