Gestures that change aspects and "Allow direct change to UI elements using touch" 

Arizona State University

Gestures allow direct changes to UI elements using touch, such as precisely zooming into a map

Tactile control

Touch gestures should provide an alternative, easy-to-use way to perform tasks while enabling direct tactile control of interface elements.

Gestures use touch as another way of performing a task

Users can perform gestures in imprecise way

 Design patterns are applied in the context of "human-computer interaction, describing common designs for the graphical user" in preforming a task.

A straightforward method of use to "perform gestures in an imprecise" manner. 